Jeff Gunter has leaned on his MAGA credentials as he mounts a long-shot bid for Nevada’s Democrat-held Senate seat, highlighting his time spent as ambassador to Iceland under former President Donald Trump.

But it’s another part of Gunter’s background that is coming under scrutiny from a coalition of Trump allies and national Republicans who want to see front-runner Sam Brown prevail in the June primary: a voting and donation history they say contradicts his attempts to carry the MAGA mantle in the race.