CHARLOTTESVILLE, Va. (CBS19 NEWS) -- On Tuesday, the Colorado Supreme Court ruled that former President Donald Trump is ineligible under the U.S. Constitution's insurrection clause and removed him from the state's presidential primary ballot.

The decision is setting up a likely showdown in the nation's highest court to decide whether the front-runner for the GOP nomination can remain in the race. After the historic ruling, Trump's Republican opponents are rallying around him.

"We don't need to have judges making these decisions, we need voters making these decisions," said Republican presidential candidate Nikki Haley.

"I think it would cause a lot of anger in this country if people had the choice taken away from them," said Republican presidential candidate Chris Christie.

Larry Sabato with the University of Virginia Center for Politics says they aren't alone.

"Even people who oppose Trump believe that the voters should make this decision," he said.

Trump's legal team has promised to appeal the decision to the U.S. Supreme Court, which has the final say about constitutional matters. If the court takes the case, Sabato says the justices will be interpreting the meaning of an amendment added to the Constitution just three years after the end of the Civil War.

"They're going to have to go back into the history of this, they are going to have to look and see what those considering the amendment at the time said about this. It went through several revisions," he said.

When asked about the recent ruling and whether he believes that Trump is an insurrectionist, President Joe Biden said that there is "no question" that Trump supported the insurrection. He added that it's now up to the court to decide whether the 14th Amendment applies.