Obama was slightly ahead among independents. However, the president received more than 9 in 10 votes from self-identified Democrats. Romney got about the same share of the Republican vote, which comprised only a quarter of the turnout.
DEFICIT, ECONOMY KEY ISSUES FOR SENATE CHALLENGERS
The federal budget deficit played well with supporters of Sen. Ben Cardin's two challengers, Republican Dan Bongino and independent Rob Sobhani.
Among the nearly one in five voters who said the deficit was the most important issue facing the country, most supported Bongino or Sobhani.
The preliminary exit poll of 1280 Maryland voters was conducted for AP and the television networks by Edison Research in a random sample of 20 precincts statewide. Results were subject to sampling error of plus or minus 4 percentage points; it is higher for subgroups.