Half of Republicans would refuse to accept a win by Hillary Clinton on Election Day, according to a Reuters/Ipsos poll released Friday evening.

Nearly 70 percent of GOP voters would blame Donald Trump’s losing on a rigged system, the Oct. 17-21 survey concluded. The findings indicate Trump supporters are listening closely to their leader’s claims over the past few weeks that the political system and media are against him. Surrogates for Trump’s campaign have been encouraged to play up the candidate’s claims of widespread voter fraud this week.