Thanks to our friends at NTD.
The Supreme Court recently ruled that the ballot had to be signed and dated. The Secretary of state said my house my rules. Stated she and the counties were to go by the state laws. All ballots received on time would be counted.
A group of Pennsylvania voters, the Republican National Committee, and the Pennsylvania Republican Party filed the lawsuit (pdf) with the Pennsylvania Supreme Court, asking justices to quickly declare illegal guidance from the Pennsylvania Department of State regarding ballots that do not have dates.