HONOLULU — Hawaiian voters are casting ballots in Democratic and Republican primaries for the state's two congressional seats, with progressive groups testing whether they can repeat an insurgent win that reshaped the state's delegation in 2024.

Both Democratic incumbents are running for reelection. One faces a direct challenge from a progressive candidate backed by the organized left, a pattern familiar in Democratic primaries across the country since 2018.

Hawaii is not a swing state — Democrats have held both House seats for years, and Republicans have little realistic path to either seat in November. That makes the primary the only election that matters. Whoever wins the Democratic nomination almost certainly wins the general.

Progressives have pointed to Hawaii as a proving ground. The state's Democratic electorate skews younger and more diverse than most, and turnout in off-year primaries tends to run low, which gives organized insurgent campaigns an opening. A small, mobilized base can move a primary when overall participation drops.

The Republican side of the ballot is also contested, though the practical stakes are lower given the state's partisan lean. Hawaii has not sent a Republican to Congress in decades.

The outcome carries consequences beyond Hawaii's borders. Progressive groups watching the results will read a win — or a close race — as evidence that left-wing primary pressure on incumbent Democrats remains viable heading into the 2026 midterms. A clear incumbent victory, especially a wide one, would hand the party's establishment a counter-argument against the insurgent left's claim that it speaks for the base.

The 2026 midterm cycle is already producing contested primaries in multiple states. Michigan has drawn particular attention: Abdul El-Sayed, the progressive physician who ran for governor in 2018, is making a congressional bid and faces what observers have described as a delicate stretch with Black voters, a constituency whose support he needs but has not locked down. El-Sayed's race illustrates the broader challenge progressives face — winning primaries requires assembling coalitions that go beyond the most ideologically committed Democratic voters.

The national environment complicates the left's pitch. Democrats are in the minority in both chambers. Speaker Mike Johnson controls the House floor, and Senate Majority Leader John Thune has the votes to set the Republican agenda in the upper chamber. Democrats — progressive and moderate alike — are effectively locked out of the legislative process except as an opposition force.

That dynamic cuts two ways for primary challengers. Incumbents cannot point to landmark bills they passed in the majority. But challengers also cannot credibly promise they will deliver more from the minority bench than an incumbent already in place.

The Senate confirmed Todd Blanche as attorney general, a nomination that drew sharp Democratic opposition. Senate Minority Leader Chuck Schumer and other Democrats called Blanche an enabler of what they characterized as presidential corruption — a line of attack that reflects the party's broader posture heading into the midterms, where the minority will run against the administration rather than on its own legislative record.

For progressives in Hawaii, the local stakes are more immediate than the national picture. A primary upset would give the movement a fresh example to recruit candidates and donors in other districts. A loss narrows that argument.

Polls in Hawaii close at 11 p.m. Eastern time. Results are expected to come in through the early morning hours on the East Coast given the six-hour time difference between Honolulu and Washington.