Though the National Republican Congressional Committee (NRCC) has outspent its Democratic counterpart nearly 2-1 this cycle, outside Democratic groups have spent $7 million more than Republican groups. This new infusion of cash from the CLF and AAN will more than level that playing field.

Many of the groups' biggest buys are in districts to where the DCCC recently shifted funds, and the new influx of cash from both sides is likely to quickly escalate the battles in those district.

American Action Network is spending over a million each to protect vulnerable incumbent Reps. Dan Webster in Florida, Jeff Denham in California and Tim JohnsonTimothy (Tim) Peter JohnsonSenate GOP rejects Trump’s call to go big on gun legislation Court ruling could be game changer for Dems in Nevada Bank lobbyists counting down to Shelby’s exit MORE in Illinois, and the DCCC is shifting new cash to both Webster and Johnson's races. And the CLF is investing more than a million in Ohio to protect Rep. Jim Renacci, and $750,000 on Rep. Quico Canseco (Texas), both races where the DCCC is pumping in new funds.

And it's spending $250,000 against Rep. Lois Capps (D-Calif.), an announcement that comes just a day after Republican challenger Abel Maldonado released an internal poll that showed him ahead of the incumbent by a point.

Prior to this new infusion of cash, the two groups had spent a combined $2.8 million this cycle.

--This post was published at 9:57 a.m. and updated at 7:24 p.m.