By David Morgan WASHINGTON (Reuters) – Republican U.S. Representative Tom Rice, who voted to impeach former President Donald Trump after the Jan. 6 U.S. Capitol riot, trailed his Trump-endorsed challenger Russell Fry by double digits on Tuesday in South Carolina’s primary election. A prime target in Trump’s midterm revenge campaign against perceived political enemies, Rice was behind Fry 24.8% to 49.9% with 90% of the vote counted, according to Edison Research. Fry, a state legislator, needed just over 50% to avoid a run-off. Another Republican targeted by Trump, Representative Nancy Mace, led…