Mr. Moore raised $1.8 million in just the past two months, leaving him with $1.3 million of cash on hand. That is a 10-to-1 advantage against his Republican rival, state Del. Dan Cox, who brought in $195,000.
The Republican currently has a cash balance of $130,000.
The governor’s race leans in favor of Mr. Moore, a political newcomer and former CEO of an anti-poverty nonprofit. Maryland is a solidly blue state where Democrats outperform the GOP 2-1, though outgoing Gov. Larry Hogan, a Republican, led the state for two terms.
Mr. Cox, who was endorsed by former President Donald Trump, beat the Hogan-endorsed establishment favorite Kelly Schulz in the primary.
“Winning elections is not about having a lot of money. It’s about having enough money,” Mr. Cox told The Washington Post.
Mr. Hogan is unable to run for a third term due to state term limits. He is only the second Republican to win two consecutive terms in the state’s history.