Murray maintained her confidence that the party would retain control of the Senate. She said that while Republican outside groups had spent $55 million so far, outspending Democrats by a 3-to-1 margin to date, the DSCC would help even the playing field going forward. She pointed to the group's $7 million money edge over the National Republican Senatorial Committee and the cash advantage most of their candidates had over their opponents.

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"The right-wing groups have had a real monopoly on the television airwaves but that is going to change now," she said.

The DSCC chairwoman attacked Republicans for backing Rep. Paul RyanPaul Davis RyanTrump vows to stand with House GOP '1,000 percent' on immigration Heckler yells ‘Mr. President, f--- you’ as Trump arrives at Capitol Hoyer: GOP centrists 'sold out' Dreamers MORE's (R-Wis.) plan to partially privatize Medicare, and promised wins in nearly every state the party is competitive in, though she did admit Nebraska was a tough battle.

When asked how likely she thought it was that the Senate would remain in Democratic hands, she joked about Senate Majority Leader Harry ReidHarry Mason ReidAmendments fuel resentments within Senate GOP Donald Trump is delivering on his promises and voters are noticing Danny Tarkanian wins Nevada GOP congressional primary MORE's (D-Nev.) statement that there were 50-50 odds his party would keep control.

"In terms of odds I am not from Nevada so I don't do odds," she said.