Don't do this, it's illegal to do that kind of shit at the polling place. Most of them have a sign up front that says "No campaigning within 30 feet of building". Convincing people to vote outside the polls is fine, do that, but if you're in the place doing that you'll get in a lot of trouble, and I mean a lot of trouble.
It’s a felony to intimidate, threaten, or coerce voters at the polls into voting for a particular candidate. That also goes for trying to convince people to not vote at all. If you see someone doing that shit you need to report them to the authorities. Talk to the officials at the polling place, and if they're behind it then call up the department of justice. That also gives precedent for a recount if such complaints are made.
Don't be a fucking retard and get stuck in jail for a year. You'l also lose your voting privileges.