The Washington Post takes note of the "top 10 Democratic flip flops" (the top 10 GOP flip flops ran earlier) and both candidates, Hillary Clinton and Barack Obama, are cited for Florida-related flips.
In Clinton's case, it involves seating Florida's delegates: "In September 2007, the Clinton campaign formally pledged not to participate in primary or caucus elections staged before Feb. 5, 2008, in defiance of Democratic National Committee rules. She now says that delegates from Florida and Michigan should be seated at the Democratic Convention, despite their flouting of rules that all the major Democratic candidates endorsed," the Post writes.
And Obama is cited for flopping on the economic embargo against Cuba. (He's not alone, GOP'er Mike Huckabee memorably changed his stance)
"In January 2004, Obama said flatly that it was time "to end the embargo with Cuba," because it had "utterly failed in the effort to overthrow Castro." Speaking to a Cuban-American audience in Miami in August 2007, he said he would not "take off the embargo" as president because it was "an important inducement for change."
See the other "shifts in position" here. And watch below to see Obama in 2004 talk about the need to end the embargo.