Minnesota's Supreme Court has dismissed former Sen. Norm Coleman's challenge to the state's November election results and declared Democratic challenger Al Franken the winner.

The court's unanimous, unsigned opinion declared that Franken "received the highest number of votes legally cast" and is entitled "to receive the certificate of election as United States senator from the state of Minnesota."

If the ruling brings an end to seven months of challenges by Coleman, Franken would become the 60th member of the Senate Democratic caucus, a move that gives the party a filibuster-proof majority in the chamber, at least on paper.