In 2000, the nation's biggest election meltdown took place in Florida due to paper butterfly ballots, ancient voting machines and poorly trained poll workers. Old machines are again a worry for some.
Said one observer, "Some sitting members of Congress woke up the next morning after these maps had been released and went, 'Oh, boy, I don't even live in the district now.' "
Every major poll of the Michigan Democratic primary showed Hillary Clinton with a big lead over Bernie Sanders. NPR's Kelly McEvers speaks to Harry Enten, senior analyst at FiveThirtyEight, about why those polls proved to be so wrong on primary day.
Tonight's debate comes as the Vermont senator is basking in an upset win in Michigan on Tuesday night. But the former secretary of state still has a big delegate lead.
Sanders won Michigan's primary in a stunning upset to Clinton. Sanders exposed Clinton's weaknesses among working class voters on trade issues and delivered on his promise to win with black voters.
Ohio Gov. John Kasich faces a make-or-break Republican primary in his home state next week. He was expected to come in second against Donald Trump in Michigan's primary last night but came in a close third. NPR talks with Kasich and his supporters in Columbus.
Money is flooding in to produce and buy TV time for anti-Donald Trump ads. NPR's Ari Shapiro talks with Elizabeth Wilner, senior vice president of Kantar Media Ad Intelligence, about how effective the anti-Trump ads were for Tuesday's primaries.