Republican presidential hopeful Newt Gingrich's campaign manager, senior strategists and key aides in early delegate-selection states all resigned on Thursday, a mass exodus that leaves his hopes of winning the Republican nomination in tatters.

The presidential hopeful Newt Gingrich took a potshot at an unusual target in the most recent Republican debate.

The Republican presidential hopeful Newt Gingrich, in an interview on CNBC, said Obama's policies made him the "finest food stamp president in American history" because more people would end up getting government aid than new jobs.