It's the most the DCCC has raised in a nonelection year January.
The group says its goal is "breaking the back of Republican gerrymandering."
The NRCC is looking to build on its historic 2014 gains in the next cycle.
Rep. Janice Hahn (D-Calif.) won't run for reelection in favor of the Los Angeles County seat.
The governor has until Friday to set the vote to replace former Rep. Michael Grimm (R-N.Y.).
Kristina Wong 02/13/15 10:32 AM EST
Kristin Beck said it's time to "pass the baton onto younger generations."
The DCCC is putting 14 memers on its "Frontline" program for the 2016 cycle.
Democrats' top two candidates have backed away from running in the New York special election.
The former N.Y. rep. who resigned amid scandal earlier this year was back on the House floor on Wednesday.
Democrats believe more than a dozen freshman GOP lawmakers are vulnerable in 2016.