Patricia Arquette riles up the crowd. via cgg

Hundreds of women (and plenty of men too!) united in Westwood, California on Sunday afternoon to attend the Every Woman for Obama Rally. The event, held at the Pauley Pavilion at UCLA, promoted voter registration among women as California's October 20th deadline draws near.

A slew of celebrities spoke at the rally, including "Samantha Who?" actress Jean Smart, comedian Chelsea Handler, Los Angeles Clipper Baron Davis, producer Irmelin DiCaprio (Leo’s mom), and teenage stem cell research activist Tessa Wick. Smart brought up why she supports Obama, listing education as a top priority, and condemning McCain's VP choice of Sarah Palin as "a dangerous, insulting decision."

Performers Patti Labelle, Jamia Nash, and Ann and Nancy Wilson of the rock band Heart entertained an extremely enthusiastic crowd who were waiving American flags and homemade signs showing their support for Obama. Heart recently spoke out against Sarah Palin's use of their 70s hit "Barracuda" as a campaign theme song, and they were on hand to reclaim it for Obama. The event was a fun and educational way to show the women of Los Angeles, as well as the many children in the audience, the importance of registering and casting their votes come November 4th.

Actress Roseanna Arquette arrived at the event with her daughter and some of their friends with the intention of just watching. However, when actress Christina Applegate cancelled, she was asked to fill in.

“I grew up in that time when young people especially were so important in changing the country and what happened,” Arquette tells Celebs Gone Good.

“[This] is the most important election in our history I think, in our lifetime for sure,” she says. “Rock the vote has gone out across the country and registered kids to vote and I think it’s actually opened kids’ eyes, and to not be lethargic and get out there. They are adults and they can change this country. Their vote counts.”

What’s her advice for kids like her daughter, Zoe, 14, who are too young to vote? “They should keep being informed, look forward to the day they can [vote], and get involved!”

By CGG Contributing reporter Richard Vishnevsky