The Clarity Team


Leaders in data, strategy, and analytics.

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The Clarity Team


Leaders in data, strategy, and analytics.

Founded in 2012, our team brings together decades of campaign strategy, data, and analytics experience. We have worked on races across the country, from the historic Obama for America campaign to Governor, Senate, and Congressional elections to local issue advocacy campaigns and everything in between. The company provides fully integrated analytic solutions to Democratic campaigns, progressive non-profits, and socially responsible corporations.

David Radloff oversees general operations, John Hagner spearheads client and strategic services, and Dan Castleman leads our data science and technology efforts. We are supported by an incredible team of analysts, data scientists, and campaign strategists.


David Radloff


Co-founder + Partner

David Radloff co-founded Clarity Campaign Labs to provide fully integrated analytic solutions to Democratic campaigns and progressive non-profits. Previously as COO of ISSI, David oversaw day-to-day operations of the company, designed new products and services, and provided overall targeting and strategy advice to clients. Prior to helping start ISSI in late 2007, he was the Director of Data and Targeting at America Votes, a coalition of the largest progressive groups in the country. He was also a founding partner of tinyHorse Solutions, a political technology start-up that created "the Donkey", a volunteer management system for campaigns. Before coming to DC, he worked for now-Senator Kaine’s 2005 campaign for Governor in Virginia. Prior to working in campaigns and politics he was a management consultant in New York City for each PricewaterhouseCoopers and IBM and worked on variety of projects around the country.

David Radloff


Co-founder + Partner

David Radloff co-founded Clarity Campaign Labs to provide fully integrated analytic solutions to Democratic campaigns and progressive non-profits. Previously as COO of ISSI, David oversaw day-to-day operations of the company, designed new products and services, and provided overall targeting and strategy advice to clients. Prior to helping start ISSI in late 2007, he was the Director of Data and Targeting at America Votes, a coalition of the largest progressive groups in the country. He was also a founding partner of tinyHorse Solutions, a political technology start-up that created "the Donkey", a volunteer management system for campaigns. Before coming to DC, he worked for now-Senator Kaine’s 2005 campaign for Governor in Virginia. Prior to working in campaigns and politics he was a management consultant in New York City for each PricewaterhouseCoopers and IBM and worked on variety of projects around the country.


Dan Castleman


Co-founder + Director of Analytics

Dan Castleman has been at the forefront of finding new ways to utilize advanced analytics for progressive candidates, political coalitions, corporations, and charitable groups. His expertise covers strategic program targeting, data analysis, modeling, and polling. Prior to starting Clarity, Dan helped found ISSI in 2007 where he oversaw and built up their analytic services with a focus on developing internal systems that streamline and optimize cutting-edge data-mining tools and technologies. Prior to joining ISSI, he was the Deputy Director of Data at America Votes where he created and designed many pieces of their current national data infrastructure. Dan holds a dual B.A. in Political Science and Computer Science from Brandeis University.

Dan Castleman


Co-founder + Director of Analytics

Dan Castleman has been at the forefront of finding new ways to utilize advanced analytics for progressive candidates, political coalitions, corporations, and charitable groups. His expertise covers strategic program targeting, data analysis, modeling, and polling. Prior to starting Clarity, Dan helped found ISSI in 2007 where he oversaw and built up their analytic services with a focus on developing internal systems that streamline and optimize cutting-edge data-mining tools and technologies. Prior to joining ISSI, he was the Deputy Director of Data at America Votes where he created and designed many pieces of their current national data infrastructure. Dan holds a dual B.A. in Political Science and Computer Science from Brandeis University.


John Hagner


Partner + Consulting Services

John Hagner is a Partner at Clarity where he oversees the expansion of our consulting and strategic service offerings. John joined Clarity as a Senior Vice President in 2013 after serving as the National Field Director for the Democratic Senatorial Campaign Committee in 2012 and was proud to be part of the team that beat the odds and helped grow the Senate Democratic Caucus. Before joining the DSCC, he was the first Director of Targeting and Data Analysis for the Democratic Congressional Campaign Committee from 2010 to 2011. He got his start on campaigns working for Howard Dean in New Hampshire and then moved to the Democratic National Committee for the 2004 general election. He was Sherrod Brown’s Field Director on his 2006 Senate campaign and stayed in Ohio running field and targeting programs for the Ohio Democratic Party in the 2008 cycle. Along the way he’s worked on races across the country, from aldermanic campaigns to Congressional special elections and everything in between.

John Hagner


Partner + Consulting Services

John Hagner is a Partner at Clarity where he oversees the expansion of our consulting and strategic service offerings. John joined Clarity as a Senior Vice President in 2013 after serving as the National Field Director for the Democratic Senatorial Campaign Committee in 2012 and was proud to be part of the team that beat the odds and helped grow the Senate Democratic Caucus. Before joining the DSCC, he was the first Director of Targeting and Data Analysis for the Democratic Congressional Campaign Committee from 2010 to 2011. He got his start on campaigns working for Howard Dean in New Hampshire and then moved to the Democratic National Committee for the 2004 general election. He was Sherrod Brown’s Field Director on his 2006 Senate campaign and stayed in Ohio running field and targeting programs for the Ohio Democratic Party in the 2008 cycle. Along the way he’s worked on races across the country, from aldermanic campaigns to Congressional special elections and everything in between.


Lee Hoffart


Senior Data Scientist + Experiments

Lee Hoffart was part of the founding team at Clarity, joining as a Senior Analyst to create a variety of new analytic offerings and work with clients on custom modeling. Previously he was a National Data Manager at ISSI and also served as a Senior Analyst on their modeling team. In 2008, after publishing 11 scientific papers, Lee left his PhD program in favor of joining the Obama campaign -- first working on the data team in Wisconsin and then joining the post election analysis team in Chicago. As a graduate research assistant he worked on elucidating iron based metalloenzyme chemical mechanisms using a combination of quantum mechanical modeling and Mössbauer spectroscopy. Lee did undergraduate research in computational and experimental protein folding; primarily using wavelet transforms in conjunction with regression based statistical models to predict common protein folding motifs. Lee holds a B.S. in pure Mathematics, Biochemistry, and Genetics from Texas A&M.

Lee Hoffart


Senior Data Scientist + Experiments

Lee Hoffart was part of the founding team at Clarity, joining as a Senior Analyst to create a variety of new analytic offerings and work with clients on custom modeling. Previously he was a National Data Manager at ISSI and also served as a Senior Analyst on their modeling team. In 2008, after publishing 11 scientific papers, Lee left his PhD program in favor of joining the Obama campaign -- first working on the data team in Wisconsin and then joining the post election analysis team in Chicago. As a graduate research assistant he worked on elucidating iron based metalloenzyme chemical mechanisms using a combination of quantum mechanical modeling and Mössbauer spectroscopy. Lee did undergraduate research in computational and experimental protein folding; primarily using wavelet transforms in conjunction with regression based statistical models to predict common protein folding motifs. Lee holds a B.S. in pure Mathematics, Biochemistry, and Genetics from Texas A&M.


Sean Duncavage


Senior Data Scientist + Infrastructure

Sean Duncavage was part of the founding Senior Analyst team at Clarity and is now a Senior Data Scientist where he runs our analytic systems and works on a variety of client-specific modeling. He joined ISSI in 2008 as the Technology Director and helped build their in-house modeling and analytics systems. Sean has an extensive background in data analysis and modeling and did undergraduate research in Computational Cognitive Neuroscience working primarily with neural networks. He went on as a graduate research assistant contributing to Artificial Intelligence based NASA scheduling software and NSF-sponsored research into model generated HIPAA compliance rules.  Sean holds a B.S. in Computer Science and Mathematics and a M.S. in Computer Science.

Sean Duncavage


Senior Data Scientist + Infrastructure

Sean Duncavage was part of the founding Senior Analyst team at Clarity and is now a Senior Data Scientist where he runs our analytic systems and works on a variety of client-specific modeling. He joined ISSI in 2008 as the Technology Director and helped build their in-house modeling and analytics systems. Sean has an extensive background in data analysis and modeling and did undergraduate research in Computational Cognitive Neuroscience working primarily with neural networks. He went on as a graduate research assistant contributing to Artificial Intelligence based NASA scheduling software and NSF-sponsored research into model generated HIPAA compliance rules.  Sean holds a B.S. in Computer Science and Mathematics and a M.S. in Computer Science.


Cindy Sui


Analyst

Cindy Sui joined Clarity Campaign Labs as a Junior Analyst in the spring of 2015, was promoted to Analyst in 2016 supporting our DCCC and Gubernatorial modeling work. Previously, Cindy worked with global health nonprofits to halt the epidemic of drug-resistant tuberculosis in Peru. She became interested in politics when she volunteered with field operations in Iowa during the 2014 midterm elections. Cindy holds a B.A. in Biology from the University of Chicago.

Cindy Sui


Analyst

Cindy Sui joined Clarity Campaign Labs as a Junior Analyst in the spring of 2015, was promoted to Analyst in 2016 supporting our DCCC and Gubernatorial modeling work. Previously, Cindy worked with global health nonprofits to halt the epidemic of drug-resistant tuberculosis in Peru. She became interested in politics when she volunteered with field operations in Iowa during the 2014 midterm elections. Cindy holds a B.A. in Biology from the University of Chicago.

Drew McDonald


Analyst

Drew McDonald joined Clarity Campaign Labs as a Junior Analyst in the summer of 2015, was promoted to Analyst in 2016 supporting our House IE and Gubernatorial modeling work. Previously, Drew worked on a quantitative study of political violence in India and for a research group studying leadership in emerging democracies. Drew graduated from Princeton University in 2015 with a B.A. in Public Policy and a minor in African Studies. His independent work focused on the empirical relationship between resource values and patterns of political violence in Africa.

Drew McDonald


Analyst

Drew McDonald joined Clarity Campaign Labs as a Junior Analyst in the summer of 2015, was promoted to Analyst in 2016 supporting our House IE and Gubernatorial modeling work. Previously, Drew worked on a quantitative study of political violence in India and for a research group studying leadership in emerging democracies. Drew graduated from Princeton University in 2015 with a B.A. in Public Policy and a minor in African Studies. His independent work focused on the empirical relationship between resource values and patterns of political violence in Africa.

Emily Kremer-McNeil


Analyst

Emily joined Clarity in the summer of 2015 as an Analytics Fellow, came on full-time later that year as a Junior Analyst and was promoted to Analyst in 2017. She graduated from Wellesley College in 2015 with a B.A. in Political Science and Environmental Studies. While at Wellesley, she interned with Habitat for Humanity Greater Boston and on Capitol Hill. 

Emily Kremer-McNeil


Analyst

Emily joined Clarity in the summer of 2015 as an Analytics Fellow, came on full-time later that year as a Junior Analyst and was promoted to Analyst in 2017. She graduated from Wellesley College in 2015 with a B.A. in Political Science and Environmental Studies. While at Wellesley, she interned with Habitat for Humanity Greater Boston and on Capitol Hill.