Six states vote in primaries that could shape Congress control

The busiest primary day of the 2026 midterm cycle so far will send voters in Alabama, Georgia, Idaho, Kentucky, Oregon and Pennsylvania to the polls with the balance of power in Congress and several state governments in play. The primaries will help decide nominees for the Nov. 3, 2026 general election, and they come as control of Congress hangs over the final two years of President Donald Trump’s second term.

Georgia and Alabama could be the clearest pressure points. Both states face June 16 runoff elections if no candidate wins a majority, stretching the fight for nominations into summer and keeping attention on races that could shape November’s battleground map. In Georgia, the Republican race to challenge Democratic Sen. Jon Ossoff is crowded, and the open governor’s contest, created by term-limited Republican Gov. Brian Kemp, is expected to be one of the state’s most consequential fights. Georgia Democrats are also trying to turn record turnout into wins in two state Supreme Court contests that have taken on new importance as voting-rights and redistricting disputes move through the courts.

Alabama’s ballot has been reshaped by redistricting complications that forced new dates in the 1st, 2nd, 6th and 7th congressional districts. The 3rd, 4th and 5th districts remain on the regular schedule, and the state’s primary will also help determine who replaces term-limited Gov. Kay Ivey. The shifts underscore how court rulings continue to alter the political map before a single general election vote is cast.

In Kentucky’s 4th Congressional District, Rep. Thomas Massie is facing Trump-backed challenger Ed Gallrein, a contest that will test whether Republican voters still reward defiance or now demand closer loyalty to Trump. Similar questions have already been sharpening Republican primaries in other states, where voters have shown they are willing to push out incumbents viewed as insufficiently aligned with the former president.

The broader backdrop is a party fight over strategy and message. Republicans are spending heavily in Georgia, while Democrats are trying to convert frustration over affordability into turnout that can carry through November. Voters in these states have also been voicing concerns about rising gas prices, the war in Iran and how the Trump administration has handled it all. With 46 states holding primaries for legislative, congressional, gubernatorial and statewide offices this year, Tuesday’s voting will not just settle nominations. It will signal which factions are strongest, which issues are mobilizing voters, and which contests could still reverberate in Washington long after the runoffs are over.