The group has $15 million in cash on hand, CNN reported.
The 30-second ad ties Rep. Rod Blum to Donald Trump.
Rep. Scott Garrett (N.J.) is one of the most vulnerable GOP incumbents.
A super PAC supporting House Democrats is targeting Rep. Ryan Zinke.
Issa said Obama "continues to deny accountability."
Rafael Bernal 10/23/16 08:30 AM EDT
A key Senate race and potential House pickups are in play.
Mike Lillis 10/22/16 09:12 AM EDT
With Trump as the nominee, California Republicans may not come out to vote, analysts say.
“I think we called it right on what would happen if Trump were the nominee.”
A Republican super PAC is spending nearly $1 million on the open seat.
Timothy Cama 10/21/16 12:08 PM EDT
A major environmental group wants to tie Republican House candidates to Exxon Mobil Corp. and...