Robert Dillon, a spokesman for the committee's Republican members, says Murkowski's spot was confirmed during a caucus vote Tuesday.
Murkowski resigned her leadership post within the Republican conference when she announced plans to run a write-in campaign last year. She took the outsider route after losing her primary to Joe Miller.
Questions were raised about whether the caucus would strip her of her ranking position while she ran for re-election. But it decided to let her keep the spot.
Since winning her race, she has expressed confidence that she'd keep her ranking title.
Republican committee members voted on the ranking spot. Their vote was voted on by the full caucus.
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