Sen. Al FrankenAlan (Al) Stuart FrankenPawlenty opts out of Senate run in Minnesota EMILY’s List president: Franken did 'right thing for Minnesota' Dem pledges to ask all court nominees about sexual harassment history under oath MORE (D-Minn.) on Friday asked Democrats to provide more donations to his colleagues, warning that several of his fellow Democratic senators could end up reprising the months-long recount that kept him from taking his Senate seat.

Franken wrote in a fundraising e-mail for the Democratic Senatorial Campaign Committee (DSCC) that some of his colleagues — like Sens. Barbara BoxerBarbara Levy BoxerDems face hard choice for State of the Union response Billionaire Steyer to push for Dem House push Billionaire Steyer announces million for Dem House push MORE (Calif.), Russ Feingold (Wis.) or Patty MurrayPatricia (Patty) Lynn MurrayCDC director to miss fourth hearing because of potential ethics issues Week ahead: Lawmakers near deal on children's health funding Ryan suggests room for bipartisanship on ObamaCare MORE (Wash.) — could end up in races that are determined by just a few votes.

"Barbara Boxer, Russ Feingold, Patty Murray: Any of these great Democrats could end up in a race as close as mine," Franken wrote. "Any of these 15 races could swing the Senate majority. And that means even a small contribution could make a very big difference."

Franken won the 2008 Minnesota race against incumbent Sen. Norm Coleman (R) by only 312 votes. The final tally was approved only after an extensive, drawn-out recount that was litigated in court for months. It took Franken until July 9, 2009, to be sworn in.

The senator's e-mail for the DSCC underscores just how close some of the Senate races facing Democrats might be. While Boxer and Murray have slight leads in the polls, their races could come down to the wire. Feingold is perceived as trailing slightly in his race, though his incumbent status could also make his contest against Republican Ron JohnsonRonald (Ron) Harold JohnsonGOP senators eager for Romney to join them The House needs to help patients from being victimized by antiquated technology Comey’s original Clinton memo released, cites possible violations MORE a nail-biter.

"We can win this thing. We can stop the Tea Party," Franken said. "But to do it, we have to fight for every single one of these 15 razor-tight races. And that means we need you to step up to the plate right now."