evidence: Vos held on with 51.3 percent of the vote in the 63rd Assembly District, but it was the closest call of his political life. He’s routinely won reelection in his heavily Republican district by 20 points or more, and hasn’t faced a primary challenger in recent years. On Tuesday, his challenger Steen finished with 48.7 percent, according to preliminary election results. [...] Steen called his campaign against Vos a "David and Goliath race," and thanked Trump for his endorsement and support during the campaign. He said the results showed voters were concerned with election integrity. [...] Trump has been in a one-sided feud with Vos since he lost to President Joe Biden in Wisconsin. His criticism escalated with his endorsement of Steen, and with his statements online and at a campaign rally in Waukesha the week before the election.