Republican presidential candidate Newt Gingrich is all but conceding that his White House campaign is over.
130112
Gingrich all but concedes campaign is over
163620
Cain suspends campaign
84878
Democratic showdown may be coming to close
60132
Democratic and Republican parties make final campaign pushes
14766
It's difficult for an incumbent to lose re-election --
147301
Santorum suspends presidential campaign
137016
Todd Palin endorses Newt Gingrich.
94109
Newt Gingrich wins in South Carolina
104231
Mitt Romney routed Newt Gingrich in the Florida primary Tuesday...
90919
Mike Huckabee drops out of race for Republican presidential nomination
85271
'I am done with representational politics'
106947
President's nominee fails to get endorsement
41147
President House has backed out:
58018
Seattle mayor concedes defeat
20949
There is no full stop in politics:
41350
Herman Cain suspends presidential campaign
18027
Ron Paul suspends campaign for president