He released a new ad accusing Alexander of supporting "amnesty" for illegal immigrants.
True the Vote declared it has evidence of tampering in runoff records.
House Majority PAC is adding $7.3 million to its fall ad reservations, increasing buys in some markets and reserving time in some completely new markets.
The North Carolina Democrat raised more than $3.6 million, her campaign said.
Dems fear that a drop-off in minority voters could severely cost them at the polls this fall.
Sen. Brian Schatz (D-Hawaii) appears to have the unlikely edge in bitter race.
Illinois Democrats are worried embattled Gov. Pat Quinn could cost them several House seats.
Democrats have said since Iowa state Sen. Joni Ernst (R) first became the GOP Senate front-runner that they’d be able to paint her as outside the mainstream, a clone of her big-name backer, former Alaska Gov. Sarah Palin (R). Now they’re getting some traction with that argument.
She said he's “being led down a primrose path to political oblivion.”
Terri Lynn Land (R) bested Gary Peters (D) with help from $1.2 million in self-funding.