Polls have closed across Maryland, and eager candidates now wait to see if their primary campaigns have wooed voters here in the Old Line State. The first returns, taken from early voting ballots, could come in as soon as 8:15 p.m.

Turnout throughout the day was light, said county voting officials. According to data collected by the Prince George's County Board of Elections, a total of 45,005 voters had cast ballots county-wide as of 6 p.m. That's a voter turnout of 8.39 percent out of a total of 536,458 registered voters in the county. 

That turnout comprised 38,005 Democratic ballots, 5,678 Republican ballots and 5,061 non-affiliated ballots cast for county school board races. 

The highest profile campaign on the ballot was no doubt the Republican presidential primary, which pitted Mitt Romney, Rick Santorum, Ron Paul and Newt Gingrich against each other to try and unseat President Barack Obama in November. 

But voters in Prince George's County were also voting in congressional races and a number of school board races. Stay tuned to Patch for more details on the returns as they come in.