By Jason Lange and Alexandra Ulmer WASHINGTON (Reuters) -Most Republicans at Iowa’s caucus said they felt Donald Trump would be fit for the White House even if he were convicted of a crime, an entrance poll showed on Monday, underscoring the strong hold the former president has on the Republican Party. Nearly two-thirds of caucus-goers also said they did not believe Democratic President Joe Biden legitimately won the 2020 election, according to the poll. Following are highlights from the Edison Research poll based on interviews with 1,577 Iowa Republicans. The results will be updated as more i…