The Des Moines Register/NBC News/Mediacom survey of likely Iowa Republican caucusgoers shows Trump has the backing of 42%, with Florida Governor Ron DeSantis at 19% and U.S.
Among Trump supporters, however, 66% said their vote was set, while 34% said they could be persuaded to change their minds.
The poll found 65% of likely Republican caucusgoers didn't think Trump had committed serious crimes, compared with the 26% who believed he had.
The survey came ahead of Wednesday's first Republican primary debate, which Trump has said he will skip, citing his large lead in polls.
A national CBS poll on Sunday showed Trump was the preferred candidate for 62% of Republican voters, with DeSantis trailing behind at 16%.
Persons:
Donald Trump, Iowa Republican caucusgoers, Trump, Florida Governor Ron DeSantis, Tim Scott, Joe Biden, Ann Selzer, Iowa pollster, caucusgoers didn't, Biden, David Ljunggren, Colleen Jenkins, Jonathan Oatis
Organizations:
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Locations:
Former, Iowa, Georgia, Wednesday's