Democratic front-runner Hillary Clinton took an easy win in the Mississippi presidential primary on Tuesday, but Bernie Sanders delivered a major upset in Michigan.
Sanders' victory in Michigan revealed Clinton's possible weakness in the Rust Belt states that might be an opening for Sanders to close the 200-delegate gap between them.
Clinton maintained her strong support among African-American voters with her big win in Mississippi. Sanders won 1 out of every 10 black votes in Mississippi as Clinton continued to dominate in the Deep South.
Clinton won easily with 82 percent of the vote to Sanders' 16 percent there.
But that changed slightly with Michigan, where Sanders cut into her support with Clinton winning 65 percent of the African-American votes there.
Clinton saw up to a 20-point lead in Michigan collapse in just days, with Sanders ultimately slipping past her 50 percent to 48 percent.