Sen. Ben Cardin easily won the Democratic primary Tuesday for U.S. Senate, far outpacing his closest challenger, state Sen. C. Anthony Muse of Prince George’s County. Cardin, 68, will run for his second term against the winner of the Republican primary—which, as of 10 p.m., was a tight race between candidates Dan Bogino and Richard J. Douglas.

Incumbent candidates easily won their Congressional primaries throughout the state.

Republican Rep. Andy Harris in District 1 and Democrat C.A. Dutch Ruppersberger in District 2 ran unopposed in their primary races.

Republican state Sen. Nancy C. Jacobs of Harford County was winning her party's primary Tuesday and was the likely contender to take on Ruppersberger in November. It is unclear what Democrat Harris will face, as the race between Wendy Rosen and John LeFerla is too close to call.

Incumbent Congressional candidates who faced nominal challenges all appear poised to win their party's nominations to run in November: Rep. John Sarbanes, Rep. Steny Hoyer, Rep. Donna Edwards, Rep. Elijah Cummings, Rep. Chris Van Hollen, and Rep. Roscoe Bartlett.

Only Bartlett, who faced seven challengers, saw a competitive race. State Sen. David R. Brinkley was Bartlett's lead challenger, garnering about 21 percent of the GOP vote Tuesday at 10 p.m. Bartlett was leading with slightly more than 44 percent.