This week, two red-state Democratic senators, Joe Manchin of West Virginia and Jon Tester of Montana, joined Sinema in firmly pledging to keep the 60-vote requirement for legislation.

“I’ve always been there. That’s been my position from day one,” Manchin tells National Review. Are there any circumstances where Manchin could see himself voting to eliminate the 60-vote requirement for legislation? “Never,” Manchin replied. “Nope, I’m sitting in Bob Byrd’s seat. Just read his history.”

“I don’t want to see the Senate become the House,” Montana senator Jon Tester tells National Review when asked about eliminating the legislative filibuster. Asked if he could imagine any circumstances where he would change his mind about the filibuster, Tester says: “Nope.”