Conspiracy theories about mail ballots. Anonymous text messages warning voters to stay home. Fringe social media platforms where election misinformation spreads with impunity.Misinformation about the upcoming midterm elections has been building for months, challenging election officials and tech companies while offering another reminder of how conspiracy theories and distrust are shaping America’s politics. The claims are fueling the candidacies of election deniers and threatening to further corrode faith in voting and …