Maine’s Democratic secretary of state on Thursday removed former President Donald Trump from the state’s presidential primary ballot under the Constitution’s insurrection clause, becoming the first election official to take action unilaterally as the U.S. Supreme Court is poised to decide whether Trump remains eligible to continue his campaign.

The decision by Secretary of State Shenna Bellows follows a ruling earlier this month by the Colorado Supreme Court that booted Trump from the ballot there under Section 3 of the 14th Amendment. That decision has been stayed until the U.S. Supreme Court decides whether Trump is barred by the Civil War-era provision, which prohibits those who “engaged in insurrection” from holding office.

The Trump campaign said it would appeal Bellows’ decision to Maine’s state courts, and Bellows suspended her ruling until that court system rules on the case. In the end, it is likely that the nation’s highest court will have the final say on whether Trump appears on the ballot in Maine and in other states.

Bellows found that Trump could no longer run for his prior job because his role in the January 6, 2021, attack on the U.S. Capitol violated Section 3, which bans from office those who “engaged in insurrection.” Bellows made the ruling after some state residents, including a bipartisan group of former lawmakers, challenged Trump’s position on the ballot.

“I do not reach this conclusion lightly,” Bellows wrote in her 34-page decision. “I am mindful that no Secretary of State has ever deprived a presidential candidate of ballot access based on Section 3 of the Fourteenth Amendment. I am also mindful, however, that no presidential candidate has ever before engaged in insurrection.”

The Trump campaign immediately slammed the ruling. “We are witnessing, in real-time, the attempted theft of an election and the disenfranchisement of the American voter,” campaign spokesperson Steven Cheung said in a statement.

FILE - Secretary of State Shenna Bellows speaks at an event, Jan. 4, 2023, in Augusta, Maine.

FILE – Secretary of State Shenna Bellows speaks at an event, Jan. 4, 2023, in Augusta, Maine.

Legal experts said that Thursday’s ruling demonstrates the need for the nation’s highest court, which has never ruled on Section 3, to clarify what states can do.

“It is clear that these decisions are going to keep popping up, and inconsistent decisions reached (like the many states keeping Trump on the ballot over challenges) until there is final and decisive guidance from the U.S. Supreme Court,” Rick Hasen, a law professor at the University of California-Los Angeles, wrote in response to the Maine decision. “It seems a certainty that [the Supreme Court] will have to address the merits sooner or later.”

In her decision, Bellows acknowledged that the U.S. Supreme Court will probably have the final word but said it was important she did her official duty.

That won her praise from the former state lawmakers who filed one of the petitions forcing her to consider the case.

“Secretary Bellows showed great courage in her ruling, and we look forward to helping her defend her judicious and correct decision in court. No elected official is above the law or our constitution, and today’s ruling reaffirms this most important of American principles,” Republican Kimberly Rosen, independent Thomas Saviello and Democrat Ethan Strimling said in a statement.

But other Republicans in the state were outraged.

“This is a sham decision that mimics Third World dictatorships,” Maine’s House Republican leader, Billy Bob Faulkingham, said in a statement. “It will not stand legal scrutiny. People have a right to choose their leaders devoid of mindless decisions by partisan hacks.”

The Trump campaign on Tuesday requested that Bellows disqualify herself from the case because she’d previously tweeted that January 6 was an “insurrection” and bemoaned that Trump was acquitted in his impeachment trial in the U.S. Senate after the capitol attack. She refused to step aside.

The timing on the U.S. Supreme Court’s decision is unclear, but both sides want it fast.

The petitioners in the Colorado case on Thursday urged the nation’s highest court to rule before March 5, known as Super Tuesday, when 16 states, including Colorado and Maine, are scheduled to vote in the Republican presidential nominating process.

The high court needs to formally accept the case first, but legal experts consider that a certainty. The Section 3 cases seem tailor-made for the Supreme Court, addressing an area of U.S. governance where there’s scant judicial guidance.

The clause was added in 1868 to keep defeated Confederates from returning to their former positions of power in local and federal government. It prohibits anyone who broke an oath to “support” the Constitution from holding office.