Republican Sen. Susan Collins of Maine said on Wednesday that she’ll vote to confirm Ketanji Brown Jackson for the U.S. Supreme Court — virtually assuring that she will become the first Black woman on the high court bench.

Collins is the first Republican senator to announce support for Jackson, President Joe Biden’s nominee to succeed Justice Stephen Breyer when he retires in June.

“After reviewing Judge Ketanji Brown Jackson’s extensive record, watching much of her hearing testimony, and meeting with her twice in person, I have concluded that she possesses the experience, qualifications, and integrity to serve as an Associate Justice on the Supreme Court,” she said, according to CNBC.