Senate races

The Democratic Senatorial Campaign Committee has launched its first ad this cycle against Senate Minority Leader Mitch McConnell (R-Ky.), while McConnell launched his second radio ad, both on Thursday.

A new Republican poll indicates Sen. Robert Menendez (D-N.J.) is hurting from the bad press he's received in recent weeks, a reversal of a similar poll released Wednesday that seemed to show the senator rebounding.

GOP strategist argues focus groups indicate Republicans can win on immigration.

A third of Massachusetts voters remain undecided in the contest for the U.S. Senate seat vacated by John Kerry.

Actress Ashley Judd is not running for Senate in Kentucky, she announced on her Twitter feed Wednesday afternoon.

The League of Conservation Voters' PAC endorsed Hawaii Sen. Brian Schatz in his bid for reelection on Wednesday, taking an early position in a likely Democratic primary.

Republican candidates fighting for a seat in the Senate are accusing their Democratic opponents of unfairly abusing their current House offices in the race to become the next senator from Massachusetts.

Massachusetts will hold a special election in late June to fill the seat of Secretary of State John Kerry. Reps. Ed Markey (D-Mass.) and Stephen Lynch (D-Mass.) are vying for that open seat.

Hagan's announcement leaves nine Democrats in the Senate who have not endorsed gay marriage.

Rep. Phil Gingrey (R-Ga.) announced Wednesday he will run for the Senate.

Florida Republican Sen. Marco Rubio helped Senate Minority Leader Mitch McConnell (R-Ky.) bring in more than $230,000 at a fundraiser in Kentucky on Monday, according to CNN.