From thehill.com:

The 52-48 Senate vote on Barrett's nomination capped off a rare presidential election year Supreme Court fight sparked by the death of Justice Ruth Bader Ginsburg on Sept. 18. GOP Sen. Susan Collins (R-Maine) was the only Republican to oppose Barrett, saying she doesn’t believe a nomination should come up before the election.
Sen. Lisa Murkowski (R-Alaska), who previously voted against advancing Barrett because of the election, supported her nomination on Monday. Sen. Kamala Harris (D-Calif.) returned from the campaign trail to oppose Barrett's nomination.