The current governor, Larry Hogan (R), is unable to run in the Nov 8th election due to term limits. Dan Cox (R) and Wes Moore (D) are the two main candidates.

See here for more info: https://ballotpedia.org/Maryland_gubernatorial_and_lieutenant_gubernatorial_election,_2022

This question will resolve as soon (after the election) as the answer is unambiguously known.