Though Senate Majority Leader Mitch McConnell (R-Ky.) urged Republicans on Wednesday to limit divisive votes to bring in witnesses, senators believe they will be able to offer their own amendments on the chamber’s impeachment resolution. Some Republicans also want the Senate to call the whistleblower.

“I believe very strongly the president should be able to call his own witnesses,” Paul told reporters on Thursday. “The rules that are put forward will be amendable, so yes I will consider strongly that the president should get his full due process, which to me means bringing in his own witnesses.”

Such a vote would need a majority, meaning Democrats and a handful of Republicans can defeat them fairly easily. But those votes are likely to be difficult for GOP senators facing reelection who are trying to balance their support of Trump with appeals to independent voters.

“I think there’s probably a bipartisan concession that we’ll keep the trial [short] so it not go on and on and on,” Sen. John Cornyn of Texas said. “We just need to take this seriously.”

