WASHINGTON (Reuters) -- About half of all Republicans believe President Donald Trump "rightfully won” the U.S. election but that it was stolen from him by widespread voter fraud that favored Democratic President-elect Joe Biden, according to a new Reuters/Ipsos opinion poll. The Nov. 13-17 opinion poll showed that Trump’s open defiance of Biden’s victory in both the popular vote and Electoral College appears to be affecting the public’s confidence in American democracy, especially among Republicans. Altogether, 73% of those polled agreed that Biden won the election while 5% thought Trump won. But when asked specifically whether Biden had "rightfully won,” Republicans showed they were suspicious about how Biden’s victory was obtained.