Maryland State Board of Elections has released a new tally of voter registration, as of the end of June 2017. Percentages are: Democratic 54.83%; Republican 25.95%; Libertarian .52%; Green .24%; independent and other 18.46%.

Just before the November 2016 election, the percentages had been: Democratic 55.00%; Republican 26.01%; Libertarian .49%; Green .23%; independent and other 18.27%.