Pennsylvania's highest court on Friday said it will consider whether counties must accept provisional ballots cast on election day at polling places by voters whose mail-in ballots lacked secrecy envelopes or were rejected for other flaws.

The Republican National Committee argued that counties do not have the authority to allow voters in the swing state to correct ballots that do not comply with the rules.

The Pennsylvania Supreme Court ruled Friday that mail-in ballots without the correct dates on envelopes cannot be counted in elections.

Pennsylvania's Supreme Court is siding with lower court decisions to block two third-party presidential candidates from the battleground state's ballot in November's election.

Pennsylvania’s Supreme Court on Monday upheld a lower court ruling that rejected a bid to get independent presidential candidate Cornel West on the ballot for the November election in the battleground state.

For now, mail-in ballots returned without a date on the outside of the envelope will not be counted in the Commonwealth of Pennsylvania.

Voters in Pennsylvania are not yet able to cast ballots, despite confusion over a state law concerning applications for mail ballots.

The Republican Party is asking the Pennsylvania Supreme Court to find it illegal for county boards of elections to alert voters to defective mail-in ballots and give them the chance to correct any errors.