Donald Trump thanked Arizona for giving him a “big win” on his way back to the White House, returning to the battleground ...

Sinema made history for Democrats, then took a moderate approach that left them disappointed and the Senate more divided.

President-elect Donald Trump has announced these picks for top White House staff positions, ambassadors and department heads ...

In a profession that often rewards bombast over substance, Bob Casey dared to be soft-spoken and imperturbable. And that is ...

Throughout the campaign, Picozzi presented himself as a moderate, willing to work with Democrats in both the state and local ...

In Nevada’s Senate race, incumbent Democrat Jacky Rosen won by a far closer margin than most polls projected. Rosen defeated ...

Past government shutdowns did not see lawmakers pay a steep political price, according to an NBC News review of historical ...

Some Republican senators will walk a careful path to satisfy Donald Trump's demands for loyalty and navigate threats of a ...

Joe Manchin (West Virginia) and Sherrod Brown (Ohio) are the last of their kind, for now: the red-state Senate Democrat.

The outgoing senator will be coming back to Pennsylvania after being defeated by GOP challenger Dave McCormick on Election ...

Narrowly defeated for reelection to the U.S. Senate, Pennsylvania Democratic stalwart and Scranton political scion Bob Casey ...