The Consistent Labeling for Political Ads Act requires large online platforms to display a clear notice with every political advertisement that identifies who paid for or sponsored that ad. The bill also requires that this sponsor identification notice remain visible if someone shares the ad with others on the same platform, preventing the label from being stripped away during resharing. The law applies to websites and apps with at least 50 million unique monthly U.S. visitors or users, including social media networks, ad networks, and search engines that sell political ads. The requirements cover all political advertisements, including those about candidates, federal elections, and major national legislative issues. The law takes effect 120 days after it is signed into law.