The United States midterm primaries are continuing their trajectory, with voters in Connecticut, Vermont, and Alabama set to cast ballots on Tuesday, determining the Republican and Democratic candidates for November's elections. In Connecticut, incumbent Governor Ned Lamont is facing a challenge from state Representative Josh Elliott, who argues that Lamont's administration has been too moderate and friendly towards wealthy interests. Elliott has focused his campaign on raising taxes on Connecticut's wealthiest residents, increasing investment in public services, and addressing affordability. In Vermont, two Republicans are competing for the chance to challenge Democratic incumbent Representative Becca Balint for the lone US House seat, while Democrats are nominating a gubernatorial candidate to challenge Republican Governor Phil Scott. Alabama voters are electing nominees in four redrawn districts under a new map that eliminates one of the state's two majority-Black districts, with special primary elections taking place on Tuesday. The Democratic nominee in Connecticut will face Republican state Senator Ryan Fazio in November, while Alabama's Democrats are unopposed in their primaries. These primary elections offer insights into emerging trends in American politics, with progressive challengers posing threats to incumbents in several states.