The 2018 Utah 4th Congressional District election, a contest between two term incumbent Mia Love, and Salt Lake city Mayor Ben McAdams turned in a win for McAdams—with him taking the lead two weeks after the election to win by a hair-thin 0.3%.
With both candidates trying to distance themselves from the party's national brands—McAdams portraying himself as a moderate Democrat and Love a pro-immigration reform moderate Republican—each side likewise sought to portray the other as a secret partisan.
With Love seeking to make Adams appear to be a member of the DC Swamp for his having interned in the Clinton Administration, and McAdams criticzising Love for being too close to increasingly unpopular President Donald Trump.
This, combined with a national wave, was enough to overcome Love's financial advantage—allowing for McAdams to just barely win UT's 4th seat in what observers catalogued as a surprise victory
Following her loss, Love portrayed the midterm results as a defeat for Donald Trump rather than conservatism wholesale; continuing to argue for the benefits of such policies even as Trump was increadibly unpopular. McAdams would go on to narrowly lose reelection in 2020 to now-Representative Burgess Owens.