Hillary Clinton brushed off a heckler who repeatedly tried to ask about her husband's sexual past during a town hall in New Hampshire on Sunday.<br />The woman, Republican state representative Katherine Prudhomme-O'Brien, stood, yelled and waved her hands around in failed attempts to get the Democratic presidential candidate's attention.<br />After the third try, Clinton finally acknowledged Prudhomme-O'Brien and said, "You are very rude, and I'm not going to ever call on you."<br />Republican presidential frontrunner Donald Trump has frequently attacked Clinton by taking jabs at her husband's sexual affairs when he was president.<br />Senator Bernie Sanders , who trails behind Clinton in polls, came to his competitor's defense on CNN's "State of the Union" on Sunday.