"Republican U.S. presidential nominee Donald Trump holds a campaign rally in Johnstown, Pennsylvania. U.S." October 21, 2016. REUTERS/Jonathan Ernst " NEW YORK (Reuters) – Donald Trump has repeatedly called this year’s presidential election rigged and has coyly said “I will keep you in suspense” on whether he would accept a Hillary Clinton victory, but many Republicans are less circumspect, according to a new poll.Only half of Republicans would accept Clinton, the Democratic nominee, as their president. And if she wins, nearly 70 percent said it would be because of illegal voting or vote rigging, according to a Reuters/Ipsos poll...