Pennsylvania Republicans on Tuesday called for some voting machines to be impounded because votes were allegedly cast on them before the polls officially opened.

Philadelphia Mayor John Street (search) told FOX News that those charges were false. And City Commissioner Marge Tartaglione, the official responsible for overseeing elections there, issued a statement.

"Recent press reports have stated that machines in at least one precinct were not properly calibrated to ensure an accurate accounting of the number of votes cast. These allegations are completely unsubstantiated and have no factual basis whatsoever," the statement read.

A city investigation found that the numbers were from a device that counted how many votes had ever been recorded on the machine, not how many would be cast Tuesday.

The complaints in the key battleground's largest city were among the earliest lodged on Election Day.

In Mercer County, Commissioner Olivia Lazor said some voters were apparently having problems with new electronic voting machines that the rural western Pennsylvania county started using about two years ago. Voters apparently were voiding their votes by accident while trying to review them, and having to redo their ballots. The delays caused longer lines than normal.

Also in Philadelphia, the Republican City Committee (search) filed a lawsuit Tuesday asking a federal judge to give them more time to challenge absentee ballots cast by Democrats. The suit demands that the city turn over a list of every city resident who received an absentee ballot, and then delay counting any of their votes until at least Nov. 5 to give the GOP time to investigate whether any ballots were cast by ineligible people.

A lawyer for John Kerry's campaign in Pennsylvania said some people were prevented from voting when at least a dozen Allegheny County precincts ran out of provisional ballots. More ballots were sent to the precincts that ran out, and Kerry lawyer Clifford Levine suggested that people who were turned away this morning should try again after 5 p.m. The provisional ballots, which are cast when there are questions about whether a person is eligible to vote, won't be counted until three days after the election.

FOX News' Todd Connor and Carl Cameron and The Associated Press contributed to this report.