"Anyone who is waiting in line deserves to be kind of, I think, thanked, and encouraged, and recognised.
"One of the things that's been really encouraging is seeing how many people are coming out early and voting, all across the country."
In a clip of the 51-year-old actor out in queue shared on Twitter, he said: "I wanted to say thank you for coming out and for voting, and for doing your part."
Meanwhile, Alicia Silverstone recently revealed Paul is just like his 'Clueless' character Josh.
The 43-year-old actress shot to fame as Cher Horowitz in the 1995 teen movie, with the 'Role Models' star as her ex-step-brother and love interest Josh Lucas, and Alicia said Paul is just as "smart and lovable" as Josh.
When asked who is most like their on-screen characters, she replied "Paul Rudd maybe?
He's just a good guy who's smart and lovable and all those good things that make up Josh.
Brittany Murphy was not like Tai.
I don't know Stacey Dash well enough to say for certain whether she's like Dionne, but I'm guessing not much."