Marco Rubio is adding another name to his growing list of Senate endorsements with the backing of Tennessee Sen. Lamar Alexander, NBC News reported.
Alexander said Rubio would be a "strong and effective president" and touted the Florida senator as "the conservative candidate who can inspire us, win the election and lead our country."
"The stakes are high. If our nominee does not win, Hillary Clinton's justices will control the Supreme Court for 30 years and we'll be stuck with Obamacare forever," Alexander said.
Alexander said he had "watched Marco up close" in the Senate and touted his work on a handful of legislative issues.
Alexander was a notable holdout even as a number of big Tennessee names lined up behind Rubio this week, including Gov. Bill Haslam and former senator Bill Frist.
Frist switched his endorsement from Jeb Bush just this week, and Haslam endorsed Rubio on Thursday. Sen. Bob Corker still has yet to endorse, and said this week he has no plans to do so.