The "mismatched signatures" problem in the midterms raised questions about the signature's use as a personal ID. We talk to a professor, who wrote a history of handwriting, about her signature issue.

CARSON CITY -- Nevada Secretary of State Ross Miller on Tuesday limited the types of signatures that can be accepted from backers of two petitions to cap revenue for the Las Vegas convention ...

In addition to these genome-wide mutational signatures, hypermutation localized to small genomic regions, ‘kataegis’, is found in many cancer types.

That would give the builders group signatures to match against the affidavits, which were collected by Democratic volunteers and helped Democrat Christine Gregoire win the election.