Why Maryland Democrats could be poised to elect another Republican governor

Kelly Schulz, who is seeking the Republican nomination for governor of Maryland, waves after receiving the endorsement of Gov. Larry Hogan, right, who is term limited, on March 22 in Annapolis, Md. (Brian Witte/AP)

In Maryland, registered Democrats outnumber registered Republicans more than two to one, but for the past eight years, Republican Gov. Larry Hogan has maintained some of the highest approval ratings of any governor in the country.

If Hogan's pick, Kelly Schulz, wins the Republican primary contest Tuesday, Democrats face a tight race in November, according to a poll conducted last month by Goucher College in partnership with WYPR and The Baltimore Banner.