We introduce the Digitally Accountable Public Representation (DAPR) Database, an innovative archive that systematically tracks and analyzes the online communications of federal, state, and local elected officials in the U.S. Focusing on X/Twitter and Facebook, the current database includes 28,834 public officials, their demographic information, and 5,769,904 Tweets along with 450,972 Facebook posts, dating from January 2020 to December 2024. The database integrates three interconnected datasets: metadata on elected officials, weekly aggregated X data, and weekly aggregated Facebook data.
Elected officials increasingly communicate across multiple social media platforms. We argue that platforms are not neutral channels: the same political pressures can be expressed differently across them. Using 6.19 million Facebook and X posts from 6,356 U.S. state legislators, we examine climate attention and stance. Ideology structures climate communication differently across platforms: in 2020–2021, liberal legislators devote substantially more climate attention on X, whereas ideological differences in climate stance are stronger on Facebook.