President Obama implored supporters on Monday for donations to help Democrats in the 15 Senate seats he said were "up for grabs" on Nov. 2.
The president painted a picture of an expansive map of competitive Senate races in a fundraising e-mail for the Democratic Senatorial Campaign Committee (DSCC).
Republicans need to pick up a net gain of 10 Senate seats on Election Day in order to win back a majority in the Senate, and make Sen. Mitch McConnellMitch McConnellJohn McCain: No longer a profile in courage McConnell: Senate won't take up TPP this year Barack Obama is the founder of Donald Trump MORE (R-Ky.) the majority leader.
The nonpartisan Cook Political Report lists 11 races as "toss up" contests, nine of which are currently controlled by Democrats. Republicans are also seen by Cook as being well-positioned to pick up Democratic seats in Indiana, Arkansas and North Dakota.
Obama said in his appeal to Democrats that the 15-seat playing field he described — and it's not clear which races exactly make up that list — will be "going right down to the wire."
The president will be lending his support for vulnerable Democrats, too, with several days of travel and fundraising this week. Obama will attend a DSCC fundraiser in suburban Washington DC on Monday night, and travel to Washington on Thursday for an event for Sen. Patty MurrayPatty Murray'BernieCare' can save ObamaCare Senate Dems make Zika a campaign issue Rubio calls for lawmakers to return to DC, pass Zika funding MORE (D). He'll attend fundraisers for Sen. Barbara BoxerBarbara BoxerFeds weigh whether carbon pollution should be measured in highway performance Juan Williams: Dems should not take Latinos for granted Reid faces Sanders supporters' fury at DNC MORE (D-Calif.) and Senate Majority Leader Harry ReidHarry ReidMcConnell: Senate won't take up TPP this year Politicians can’t afford to ignore Latinos Trump poised to betray primary supporters on immigration MORE (D-Nev.) in their respective states on Friday.
"The DSCC has already begun to shift momentum in our favor in critical races — but Republicans only need to win 10 of the 15 seats up for grabs to take the majority," Obama wrote Monday. "But if you keep moving forward in the face of difficulty, we will win this election."