Colom's victory is a ironic twist since he defeated the senator who blocked his judicial nomination in 2023.
Colom's victory means the democratic caucus will hold at least 55 seats in the Senate and leaves Alaska, which appears likely to be won by Democrat Mary Peltola, the only Senate race left to be called.
In the House, Dem's seat total has climbed to 257 with 9 seats races uncalled.