Republicans began their debate Thursday night with insults and ended with three candidates pledging to back Donald Trump should he win the nomination.<br />Florida Sen. Marco Rubio and Texas Sen. Ted Cruz took more shots at Trump in Fox News' debate - and through it all, the billionaire businessman seemed to relish standing center stage, defending himself against foes and moderators while showing his mettle to supporters.<br />Clearly annoyed that Rubio had joked days ago about the size of Trump's hands - suggesting, as Trump put it, that "if they're small, something else might be small" - the Republican front-runner made a claim seldom heard during a presidential debate.<br />Chris Wallace had a real-time fact check queued up when Trump asserted he'd cut $500 billion in spending - pointing out that his strategies, eliminating the Department of Education and the Environmental Protection Agency , would save just a fraction of that amount.
