Democratic incumbents are facing spirited challenges Tuesday in at least two of New York's congressional primaries, the latest proving ground in the high-stakes fight between the progressive left and the party establishment over the Democratic Party's future.

A study on COVID-19 vaccine effectiveness has finally been published after being blocked from a government health journal.

Senate Republicans hope their Wednesday meeting with President Trump will resolve intraparty fissures over the SAVE America Act and other issues several say are distracting from more important pre-election priorities.

California intends to sue the Trump administration over its deal to end an offshore wind project proposed off the state's central coast.

President Trump traveled to Pennsylvania on Tuesday to back Rep. Ryan Mackenzie's reelection bid, but joked with the incumbent Republican that an audience of his constituents didn't want to hear from him.

South Carolina voters return to the polls Tuesday to finalize the Republican nominee for governor in a runoff election that has become a bruising grudge match between two of the state's leading politicians.