Derek Willis

News Applications Developer

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Derek Willis is a news applications developer at ProPublica, focusing on politics and elections. He previously worked as a developer and reporter at The New York Times, a database editor at The Washington Post, and at the Center for Public Integrity and Congressional Quarterly. He began his journalism career at The Palm Beach Post. He is a co-founder of OpenElections, a project to collect and publish election results from all 50 states.

Campaign Donations Reflect the Sharp Split in Congress Among Republicans

A ProPublica analysis of political fundraising shows conservative House Republicans have less and less in common with their party’s leaders, whose donors sometimes more closely resemble those of Democrats.

How to Vet Nonprofits Before You Give

Using ProPublica’s Nonprofit Explorer and a charity’s own documents, you can make a more informed giving decision.

The Dog Ate My Vote: How Congress Explains Its Absences

It’s customary for members of the House of Representatives to file an explanation when they miss a vote. These Personal Explanations are a glimpse into the pace and trade-offs inherent in modern government.

Personal Explanations

When Members of Congress Miss Votes, and Why

How Senate Hopefuls Keep Donors Secret From Voters Until It's Too Late

U.S. Senate campaign finance disclosures are still slow-walked on paper through a 40-year-old system. Is getting it fixed worth trading away another lid on political money?

FEC Itemizer: Browse Federal Campaign Finance Filings

Itemizer allows you to browse electronic campaign finance filings from the Federal Election Commission and to see individual contributions and expenditures reported by committees raising money for federal elections.

Introducing FEC Itemizer: A Tool to Research Federal Election Spending

Today we’re launching a new interactive database that makes it easier to get detailed federal campaign finance data.

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