With its heavily African American population, Barack Obama solidly defeated Hillary Rodham Clinton in Louisiana. According to exit polls, 48 percent of voters in the Louisiana Democratic Primary were African Americans and they opted for Obama by a margin of 86-13 compared to the 47 percent of Caucasian voters who backed Clinton by a margin of 58-30. Obama won all age groups and educational attainment levels in Louisiana except senior citizens aged 65 and over and those who did not complete high school. Obama won voters who identified as Democrats and those who identified as Republicans as well as Independents and all ideological groups. Regarding religion, Obama won all major denominations, including Roman Catholics, a group that often strongly backed Clinton nationwide.