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Image: Maryland Democratic Gubernatorial Candidate Tom Perez Campaigns Ahead Of Tuesday's Primary
Maryland Democratic gubernatorial candidate Tom Perez greets commuters Friday at the Shady Grove Metro Station in Rockville. Win McNamee / Getty Images

Data Download: Democrats dominate airwaves in Maryland governor’s race

Democratic candidates have spent $12.5 million on ads , with another $1.2 million by the Democratic Governors Association aimed at influencing the GOP primary.

By , and

Republicans and Democrats have spent $14.9 million on airwaves in the Maryland gubernatorial primary, the marquee race on the calendar today, according to the ad-tracking firm AdImpact. 

The vast majority of that — $13.7 million, has come on the Democratic side. Non-profit executive and best-selling author Wes Moore has led the pack with $3.2 million, followed by the outside group backing former Labor Secretary. Tom Perez, Maryland Opportunity, with $2 million. Perez’s campaign has spent $1.8 million, and Comptroller Peter Franchot has spent $1.6 million. 

On the GOP side, Kelly Schulz, the former state Commerce secretary backed by Gov. Larry Hogan, spent $914,000, while her opponent, the Trump backed state Del. Dan Cox, has spent just $20,000.

But Cox has gotten a big boost from the Democratic Governors Association, which has spent more than $1.2 million on ads labeling Cox as “too conservative” and emphasizing his ties to Trump — ads that could cost him in a general election, but right now, could help him with Republican voters.