PRESS MEMO - MAY 2026

Louisiana’s rare party primary has national implications

Party primaries are the norm in the rest of the country, but they’re not in Louisiana.
Illustration of a voting ballot

Louisiana’s switch to party primaries for some races in 2026 will be a real-time case study in what happens when states restrict primary participation: chaos, confusion and disenfranchisement. As other states consider moving in a similar direction, it could be a warning sign for the country.

BACKGROUND

Nationwide, 47 states use party primaries for federal offices. But since 1975, Louisiana hasn’t had party primaries. Every candidate runs on the same ballot in the general election, and every voter can participate. If nobody gets a majority, the top two finishers advance to a runoff.

Research from the Unite America Institute shows that open primary systems have increased meaningful participation, mitigated polarization, and improved the quality of governance. Several polls also show Louisianans like the open primary system.

WHAT TO EXPECT

Signs point to a costly and chaotic election that risks disenfranchising Louisianans who are accustomed to and strongly support a five-decade-old open system.

Voters reformed the broken system, opting for top-four nonpartisan primaries and instant runoff general elections. Every Alaska voter — 58% of who are politically independent — was able to participate in the same primary election.

The system increased participation and competition, and resulted in winning candidates who reflected the political diversity of the state. In 2022, voters elected a conservative Republican governor, moderate Republican senator, and moderate Democratic representative.

Costly

The Louisiana Legislative Fiscal Office estimates that party primaries will cost at least $11.7M this year, and could be $19.7M depending on how many runoffs there are.

Confusing

A March 2026 poll finds 62% of Louisianans are unaware of the change to party primaries.

Voter Disenfrachisement

All six of Louisiana’s U.S. House seats and its Senate seat are safe for either Democrats or Republicans and will be effectively decided in the May 16 primary. Only votes cast in the dominant party’s primary will be meaningful in determining the winner. That’s in contrast to the old open primary system, where every voter could cast a ballot for their favorite candidate, regardless of party.

The more-than 830,000 unaffiliated voters in Louisiana must choose a single party’s ballot in the primary.

Democrats — including 76% of Black voters — cannot vote in Republican primaries, and will be effectively disenfranchised from most elections of consequence in the heavily Republican state.

NATIONAL IMPLICATIONS

Louisiana is a real-time example of the nationwide battle over primary rules, the role of special interests, and how closed primaries punish political independence.

  • Wyoming closed its primaries in 2023, giving outsized influence to a narrower slice of voters and pushing the state’s politics toward hardline agendas and dysfunction.
  • For the first time since the mid-1980s, the West Virginia Republican Party has a closed primary in 2026, meaning only voters registered as Republican can participate.
  • At least 13 states have introduced legislation to close primaries in 2026. Aside from WV, all have failed so far.
  • Ideological PACs have identified low-turnout party primaries as a key leverage point to influence American politics. 
  • When these PACs and their ultra-wealthy backers unite behind a primary challenger, that candidate is about 4x more likely to win.
  • In Louisiana, these groups have coalesced behind Rep. Julia Letlow, who is challenging incumbent Sen. Bill Cassidy. This includes the pro-Trump MAHA PAC, who pledged $1M to Rep. Letlow the day after she announced.
  • Sen. Cassidy has demonstrated occasional independence from President Trump and the GOP, most notably when he voted for Trump’s second impeachment.
  • Party activists immediately set their sights on a primary challenge. Under the old open primary system, that was harder to pull off. But in a Republican party primary, where party activists hold the keys to re-election, polls suggest they could succeed.

Available Spokespeople

The following Unite America staff, partners, and in-state advocates are available for on-the-record interviews, background briefings, and rapid response in the lead-up to and aftermath of Louisiana’s primary elections.

Nick Troiano, Unite America Executive Director

Dr. Richard Barton,
Unite America Research Fellow and Political Science Professor at Syracuse UniversityFormer

Congressman Garret Graves (R)

Alberto Ramos
, Veterans for all Voters CEO

Louisiana Lieutenant Governor Billy Nungesser
(R)

M. Christian Green
, League of Women Voters of Louisiana President

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