Signs are pictured outside an early voting center on Thursday, May 9, 2024, in Rockville, Md. President Joe Biden and former President Donald Trump look to pad their delegate totals in Maryland Tuesday, May 14. Maryland voters will also decide contested primaries in a Senate race that has further complicated Democratic efforts to keep control of the narrowly divided chamber this fall. The leading Democratic primary candidates are Rep. David Trone and Prince George's County Executive Angela Alsobrooks. (AP Photo/Robert Yoon)
FILE - U.S. Rep. David Trone, D-Md., speaks at a news conference Jan. 17, 2019, on Capitol Hill in Washington. Democrats voting in Maryland's contentious primary for U.S. Senate are divided about who is best positioned to beat Republican former Gov. Larry Hogan. Trone and Prince George's County Executive Angela Alsobrooks are the most prominent candidates in the Democratic primary. (AP Photo/Andrew Harnik, File)
Signs are pictured outside an early voting center on Thursday, May 9, 2024, in Rockville, Md. President Joe Biden and former President Donald Trump look to pad their delegate totals in Maryland Tuesday, May 14. Maryland voters will also decide contested primaries in a Senate race. Former GOP Gov. Larry Hogan's late entry into the race has given Republicans hope of a possible pick-up in a state that hasn't elected a Republican U.S. senator since 1980. The leading Democratic primary candidates are U.S. Rep. David Trone and Prince George's County Executive Angela Alsobrooks. (AP Photo/Robert Yoon)
FILE - Prince George's County Executive Angela Alsobrooks, center, listens during a bill hearing in Maryland, Jan. 23, 2020, in Annapolis, Md. Democrats voting in Maryland's contentious primary for U.S. Senate are divided about who is best positioned to beat Republican former Gov. Larry Hogan. Alsobrooks and Congressman David Trone are the most prominent candidates in the Democratic primary. (AP Photo/Brian Witte, File)
FILE - Former republican Maryland Gov. Larry Hogan visits the Bridge Boat Show in Stevensville, Md., April 12, 2024. Democrats voting in Maryland's contentious primary for Senate are divided about who is best positioned to beat Hogan. Congressman David Trone and Prince George's County Executive Angela Alsobrooks are the most prominent candidates in the Democratic primary. (AP Photo/Susan Walsh, File)