The DSCC had $3 million cash on hand at the end of the month. The National Republican Senatorial Committee has not yet released its January numbers.

Democrats enter the 2014 cycle facing a tough map, with more incumbents up for reelection than Republicans, and so far, more retiring senators. Republicans, however, will have to net six seats to take back the majority in the Senate, a tough goal in any year.

Democrats' House campaign arm, the Democratic Congressional Campaign Committee, outraised its Republican counterpart in January, bringing in $6.1 million, more than the $4.4 million raised by the National Republican Congressional Committee (NRCC) over the same span. Democrats now have $4.6 million cash on hand, while the NRCC has $2.8 million cash on hand.