As manual recounts get underway in Florida Thursday, lawsuits challenging what votes should be counted and how long counties have to count them have been piling up for days.

Since Saturday, more than 10 major legal motions have been filed. How they shake out could play a pivotal role in deciding who the state’s next U.S. senator will be. The still-undecided race pits Sen. Bill Nelson, a Democrat, against Gov. Rick Scott, a Republican.

Here’s a look at some of the lawsuits filed and what they could mean for the recount effort.

Signature mismatch

The Florida Democratic Party sought to extend the deadline for people to correct ballots with signatures deemed not to match what's on record.

U.S. District Judge Mark Walker decided Thursday to give some voters until 5 p.m. Saturday to fix their ballots. The Scott campaign is appealing that ruling.

Late in the mail

This lawsuit also filed by the Democratic Party and the VoteVets Action Fund seeks to validate vote-by-mail ballots that were postmarked before Election Day but received after that. The lawsuit contends voters should not be disenfranchised because of postal service speed.

The case is pending before Walker.

Recount deadlines

A third Democratic Party lawsuit asked that all counties be given enough time to finish both a machine and a manual recount. The Democrats contend more populated counties will have more difficulty meeting the deadlines and should be allowed time to count every vote.

Walker refused Thursday to extend the deadlines.

What did they intend, anyway?

The Democrats also want to set a new standard for voter intent. Under state law, voters must use only approved markings or their ballot is disqualified, and they can't simply cross out a mistaken vote but must explain in writing why they did so. The lawsuit contends that has a discriminatory impact on non-native English speakers and illiterate voters.

Walker has this case before him, as well.

Scott's role, considered

The League of Women Voters of Florida and Common Cause seek to limit the role Scott can play as governor in administering the election and recount because he has a conflict of interest. Scott's lawyers said at one hearing that he would recuse himself from sitting on the board that certifies final election results. But the lawsuit wants to bar the governor from having any influence over the canvassing process or authority to suspend election supervisors.

The case is pending before Walker.

Delay in Palm Beach

Democrat James Bonfiglio, in a recount for a Palm Beach state House seat, wants to make sure Palm Beach County election officials have time to recount his race. A state judge agreed to extend the deadline for all of Palm Beach County, but the case was moved to federal court and remains pending.

Palm Beach manual recount

Nelson's campaign filed a lawsuit asking a judge to order a full manual recount of all Palm Beach County votes because equipment failures and other problems resulted in that county's failure to submit a machine recount to the state. The lawsuit asks the judge to order the manual recount to be completed by noon Sunday.

The case is pending.

Unofficial in Broward

Scott's Senate campaign sued Broward County in an effort to prevent elections officials from counting ballots that were valid but that had not been canvassed by the Nov. 10 deadline for the initial unofficial total. A judge sided with the county Thursday.

Public records

A judge sided with the Scott campaign in another Broward County lawsuit, this one involving Florida's public records laws. Scott's lawyers contended that Broward Supervisor of Elections Brenda Snipes was violating state law by not complying with their requests for access to a variety of election records. The judge agreed, and Snipes provided the information.

Palm Beach balloting

This lawsuit by the Scott campaign contended that Palm Beach County Supervisor of Elections Susan Bucher improperly refused to allow Republican representatives to witness the processing and duplication of ballots that were physically damaged.

A judge ordered that any such ballot that is disqualified should be reviewed by the county canvassing board and Bucher should provide a list of all voters who voted by provisional ballot.

Impounded

Scott's campaign also filed lawsuits in Broward and Palm Beach counties seeking to have voting machines impounded by the county sheriff and the Florida Department of Law Enforcement when not in use. In Broward, a judge wouldn't go that far but said extra deputies would be stationed at the elections office to keep watch. In Palm Beach, the lawsuit was defused when

The Associated Press contributed to this report.