Maryland’s Primary Election Day is July 19th (postponed from an earlier date in June given redistricting) and early voting is underway through July 14th. There are competitive races for Governor, Comptroller and Attorney General, though none of those races includes an incumbent.
Turnout so far for early voting has been low, according to recent reports, and approximately 75% of mail-in votes have yet to be turned in.
Baltimore Sun: Maryland’s early voting turnout lags behind 2018
Washington Post: Maryland’s 2022 primary elections: How to vote, candidates and more