If elected in November, Brown would become Maryland's first black governor. Attorney General of Maryland Douglas Gansler and Heather Mizeur followed Brown with each holding more than 20 percent of the votes.
In the Republican race, Larry Hogan out-beat his opponents. Both the candidates took the stage to thank their voters for the turn out.
"This election is not just a typical fight between democrats and republicans, it's more important than that," Hogan said. "This is a fight for Maryland's future, and it's a fight worth fighting."
"This campaign isn't about where we've been, it's about where we're going," Brown said. "It's about building a better Maryland for more Marylanders."
Both Hogan and Brown will move on to November for a chance to be Maryland's next governor. Both of the candidates top priority is to bring more jobs to Maryland. Brown hopes to build stonger schools, safer neighborhoods, and to bring more opportunities to middle-class families.
Hogan plans to eliminate the rain tax in Maryland and cut more than $1.75 billion in waste, fraud and abuse.
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