David Hogg, Parkland Survivor and D.N.C. Vice Chair, Hopes to Unseat Democratic Incumbents

David Hogg, a young liberal activist and now a vice chair of the Democratic National Committee, is leading an effort to unseat the party’s older lawmakers in primaries.

Democrats Sue Trump Over Executive Order on Elections

The lawsuit accuses President Trump of vastly overstepping his authority to “upturn the electoral playing field in his favor and against his political rivals.”

Bernie Sanders Has an Idea for the Left: Don’t Run as Democrats

The Vermont senator, who has long had a tense relationship with the Democratic Party, suggested in an interview that more progressives should join him in running as independents.

Democrats Plan Nationwide Blitz of Town Halls in Republican Districts

A series of events in all 50 states aims to capitalize on a recent warning from Republican leadership that its lawmakers should avoid such public forums.

The Democratic Party Reconsiders a Huge, Vulnerable Database of Voter Information

The party’s storehouse of everything it knows about American voters required an extraordinary intervention to keep it running, people involved said. A meltdown could have crippled its campaigns nationwide.

Democratic National Committee Files Lawsuit Against Trump

The party claims President Trump’s executive order aimed at independent agencies will gut the Federal Election Commission.

Tulsi Gabbard’s Unorthodox Path to Trump’s Intelligence Team

Ms. Gabbard grew up in a secretive offshoot of the Hare Krishna movement and has made a dizzying journey from conservative to liberal darling to Trump ally.