Mostly Republicans, according to Democratic consultant Jerry Skurnik, who emailed this missive to reporters this morning:
"With 92% of EDs [election districts] reporting, turnout for Democratic Attorney General is 591,833, which probably means an overall turnout of about 13 percent. GOP Gov Primary has 439,555, which probably mean about 18 percent.
"This is consistent with national trend of Republican Primary turnout being much better this year than Dem turnout. Some people think this means a lot. Others (like Nate Silver) think it doesn't mean much."