Google Transparency Report – “This searchable database features political ads that have appeared on Google and partner properties. It is updated once a week. Find ads about federal candidates or current elected federal officeholders, and see who paid for them…

Introducing a new transparency report for political ads. We first launched our Transparency Report in 2010 with the goal of fostering important conversations about the relationship between governments, companies, and the free flow of information on the internet. Over the years, we’ve evolved the report, adding sections about content removed from Google Search due to European privacy laws, adoption of encryption on websites (HTTPS), and more. And today, we’re adding another new section to our Transparency Report: Political Advertising on Google. Earlier this year, we took important steps to increase transparency in political advertising. We implemented new requirements for any advertiser purchasing election ads on Google in the U.S.—these advertisers now have to provide a government-issued ID and other key information that confirms they are a U.S. citizen or lawful permanent resident, as required by law. We also required that election ads incorporate a clear “paid for by” disclosure. Now, we’re continuing to roll out new transparency features with the addition of the political advertising report as well as a new political Ad Library.”