Al Franken's Senate campaign called on the Minnesota Secretary of State to launch a comprehensive investigation into the possibility of missing ballots in the state's recount election.

In a conference call with reporters on Monday, aides to the Democratic challenger said that they were growing increasingly concerned with news reports that ballots from Election Day -- which by state law must be recounted -- have gone missing.

"The number of votes counted on November 4th," said spokesman Andy Barr, "exceeds the number of ballots produced for consideration during the recount."

Marc Elias, Franken's chief lawyer, said that the campaign was not alleging foul play, noting that many of these missing ballots could be the product of administrative oversight or simple misplacement. But, with the election margin down to double digits (according to the Franken campaign's internal numbers, which they would not detail) he added that every single vote was of the utmost importance.