Rick Santorum will appear on the Indiana primary ballot after Marion County originally said he had not received enough signatures.
GOP candidate Jim Wallace will not appear on the ballot to challenge Congressman Mike Pence.
Patricia Sandifer only had one signature when she turned in her petition. Candidates are supposed to have 4,500.
Indiana voters are challenging Rick Santorum's appearance on the Indiana presidential primary ballot.
A Lafayette resident filed a petition but had only gathered one signature.
Monroe County commissioners have agreed to purchase and lease new ballot scanners.
The Monroe County Election Board decided to use paper ballots earlier this year, causing slow-downs in Tuesday's election results.
An aide to Indiana Governor Mitch Daniels was mistakenly handed a ballot pre-marked for Democratic Party candidates, according to the Marion County clerk.
Both Republicans and Democrats have alleged irregularities with ballot petitions in Indiana in 2008.
Deadlines for independent write-in candidates were Monday, while write-in Democrats or Republicans had until Tuesday to file.