Can establishment Republicans stop Donald Trump?
Video duration: 21:26Video has closed captioning.
Donald Trump racked up seven wins on Super Tuesday and holds a 100 delegate lead over Ted Cruz which has establishment Republicans worried about his frontrunner status. Joined by 2008 Republican nominee Mitt Romney, Cruz and Marco Rubio have launched sustained attacks of Trump's conservative credentials and record. At times, the Republican race took a decidedly personal -- and anatomical -- turn.