In the Allen West contest they failed to complete the recount by a required deadline thus the original vote was certified. Several questions are still unanswered such as allegations of 900 votes cast in a precinct with only 7 registered voters.
A TV station in Florida documented several cases of non-citizens voting, one person admitted to voting in many elections. One gentleman stated he knew nothing about him being registered.
A key point was that the Motor Voter Law doesn't provide any method of verifying citizenship other than self identification on the form.
Oddly enough, Obama didn't win in any state that required a photo ID to vote. Not proof, just an odd and totally unconnected coincidence that means absolutely nothing.
A total of 300,000 votes among 3 swing states would have turned the electoral vote for Romney.