Nine million Californians are voting by mail this election.

And they can wait until Election Day to cast those ballots.

But signatures on the envelopes of vote-by-mail ballots have to be verified.

Shasta County Registrar of Voters Cathy Darling Allen is President of the California Association of Clerks and Election officials.

She says counting vote-by-mail ballots is a slower process.

But she says voters shouldn't rush to vote either and points to the 2008 Presidential primary.

Allen: "Because our primary in California here in 2008 was in February we had lots of people who had cast ballots for candidates who dropped out and voters were very upset about it."

About three million more people are voting by mail this election than in 2008.

The more people vote by mail, the more likely it is that the outcome of a close race won't be decided on Election Night.