The Hill reports:

Sen. Bill Nelson’s (D-Fla.) campaign filed a lawsuit on Tuesday seeking to bar Florida’s top elections official from rejecting unconventionally marked ballots.

…

The lawsuit argues that Florida Secretary of State Ken Detzner’s office could reject ballots on which a voter may have marked a selection in more than one way.

Such ballots may appear as overvotes or undervotes — ballots on which a voters’ selections either exceed or fall below the maximum number of selections allowed — in vote-counting machines and therefore may have been overlooked by county election officials.

The Nelson campaign’s lawsuit asks a judge to ensure that such ballots are counted should the Senate race go to a hand recount.