GOP Contenders Presidential nomination 2016 | Page 5 | The Gayly

Analysis: Rivals still searching for formula to stop Trump

Election roundup: Sanders wins Michigan, Trump expands lead over Cruz

Viewer's Guide: All eyes on Michigan, the big Midwest test

The Latest: Mitt Romney says he will not run for president

Analysis: Rubio, Cruz forge loose alliance to block Trump

Romney calling Trump 'phony,' urging Republicans to shun him