Washington (CNN) Hillary Clinton was the favorite of Wisconsin Democrats in a straw poll this weekend — but not by much.

She drew the support of fewer than half of the 511 delegate votes cast for the party's presidential nomination at the Wisconsin Democratic Party convention this weekend, and held a slim win over Democratic primary challenger Bernie Sanders.

Clinton had 252 votes, or 49% support, while the Vermont senator drew 208 votes, or 41% support, according to WisPolitics.com . Vice President Joe Biden and former Maryland Gov. Martin O'Malley, who launched his bid last month, each took 3% support.

Jeff Weaver, Sanders' campaign manager, touted the poll and sizable crowds at Sanders' rallies as evidence that the candidate's message is resonating with voters.

"The Wisconsin straw poll and huge turnouts at town meetings in New Hampshire and Iowa are sending a message that people care about real issues like income inequality and the collapse of the American middle class," he said in a statement.