Natalie Portman Shows Off Baby Bump in Sweet Pink Dress While Campaigning for Hillary Clinton

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Natalie Portman is getting out the vote.

The notoriously private actress made her voice heard on Monday, visiting Hillary Clinton's campaign office in Elkins Park, Pennsylvania, for a voter registration kick-off event.

WATCH: Natalie Portman Is Perfectly Poised as Jackie Kennedy in First Teaser Trailer for 'Jackie'

Pregnant with her second child, Portman glowed as she spoke to volunteers about the importance of signing up voters. She rocked a pale pink long-sleeve dress with a girly, ruffled hemline for the occasion, completing her look with black tights and pointy lace pumps.

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#ImWithHer, indeed. 

Portman, 35, campaigned for Clinton at three other events in the Philadelphia-area as well, but despite the jam-packed day, she managed to stay positively giddy as she supported the Democratic nominee just one day after the second presidential debates.

Republican presidential hopeful Donald Trump also made appearances in the area, as the deadline to register in Pennsylvania, a major battleground state, is Tuesday. Clinton's first post-debate appearance was in Detroit, Michigan.

WATCH: Celebs Slam Donald Trump's Answers, Sniffling and Demeanor in Second Debate Against Hillary Clinton

A fan tweeted the tail end of Portman's chat with volunteers, where she noted that they were "right on the finish line."

Not only is Portman stumping for a former first lady, she's playing one on the big screen as well: the famous Jackie O.

The Black Swan star recently spoke with ET's Cameron Matthison at the Toronto International Film Festival, where she admitted that it was tough to play one of the most popular first ladies of all time in her upcoming biopic, Jackie.

MORE: Natalie Portman Loves Her New Home in Los Angeles After Living in Paris

"It was really, really scary because, of course, people really know her and have an idea about her, so there's a big pressure to match the way of speaking and the look and the way of moving and everything," she admitted. "But it was nice to be led by Pablo [Larrain], the director of that film, who really allowed me to take it to personal places."

Portman first debuted her baby bump at the Venice Film Festival last month. She and husband Benjamin Millepied currently have one son, 5-year-old Aleph.

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