I'm not really sure how it was decided that Florida have an early primary. I vaguely remember something about it before leaving California but really didn't pay attention to it. Can someone please clue me in?

If it was the State of Florida in some fashion and if the DNC warned the primary would be invalid before it was officially changed, then I believe the responsibility lies with the State. If the DNC kept quiet until the date change occurred, then it should be the DNC's responsibility. If the Florida DC agreed to this change and had the option to leave it where it was, then the responsibility lies with the FDC.

However, I do not believe the previous vote should stand. Either the delegates are totally out as the DNC decided or it should be a revote since many Democrats did not vote for the simple reason they knew their vote was worthless for the primaries.