Carson said he's been overwhelmed by donations he's received.
Complaints say Bush, Walker, O'Malley and Santorum are already "testing the waters" for a run.
Jonathan Easley 03/31/15 01:35 PM EDT
He said Republicans are in the pocket of big banks, while Democrats are intimidated by them.
Raja Krishnamoorthi, who lost to Duckworth in the Democratic primary in 2012, will run for the House again in 2016.
Kevin Cirilli 03/31/15 10:49 AM EDT
Progressive groups are pressing Warren to challenge Hillary Clinton.
The senator is spending time with his family ahead of his likely White House announcement.
Julian Hattem 03/31/15 09:49 AM EDT
“I’ve always been nervous about the attacks on the NSA," Bush said.
The Democratic establishment is lining up against P.G. Sittenfeld, Strickland's young primary challenger.
Clinton's favorability ratings have plunged in two critical battleground states.
Bush, Rubio, Walker and Cruz defended the law signed by Gov. Mike Pence.