State Sen. David Johnson: The senior member of the Iowa Senate says he has suspended his Republican Party membership to protest “the racist remarks and judicial jihad” by Donald Trump. Johnson said he changed his voter registration on Tuesday from Republican to “no party.” “I will not stand silent if the party of Lincoln and the end of slavery buckles under the racial bias of a bigot. Mark me down as Never Trump,” he said. (7 June 2016)

A.J. Spiker, Iowa Republican Party chairman from 2012 to 2014: Mr. Spiker said he is hoping another GOP candidate will step forward to challenge Trump at the upcoming Republican National Convention in Cleveland. He describes Trump as an authoritarian who is unfit for public office. “I think the delegates ought to vote their conscience in Cleveland and the party ought to move in a different direction than Donald Trump,” Spiker said. (7 June 2016)