Terri Lynn Land (R) bested Gary Peters (D) with help from $1.2 million in self-funding.
President heralds vulnerable senator as "serious person who's trying to do the right thing."
The Mississippi senator's campaign will amend $53,000 in get-out-the-vote cash payments.
The Colorado Democrat said he had to stay in Washington for votes.
The Iowa GOP Senate candidate disavowed impeachment talk.
GOP hopes of corralling the Texas senator during the 2014 primary season are officially dead.
McDaniel is contesting his loss in the GOP primary runoff election.
A spot features a sheriff talking about efforts to help his county after tornadoes struck.
Rep. Colleen Hanabusa (D-Hawaii) got aggressive during a Monday night debate with Sen. Brian Schatz (D-Hawaii), taking shots at his appointment to the Senate and questioning his competence in office.
Hanabusa, looking to make up...
NRSC vice-chair says conduct of "Washington, D.C., machine ... was incredibly disappointing."