 Due to its predominantly African-American population, Allendale County has been consistently Democratic in Presidential voting since 1976 and was among the few counties to be carried by Walter Mondale in 1984.In the 2008 U.S. presidential election Barack Obama received 75.1 percent of the county's vote.In the 2012 U.S. presidential election Barack Obama received 78.3 percent of the county's vote.