Midterm elections: Celebrities including Tom Hanks, Gwyneth Paltrow and John Krasinski cast their votes

Instagram / Gwyneth Paltrow
Instagram / Gwyneth Paltrow

Celebrities have started casting their ballots for the midterms – and they're using social media to encourage their followers to do the same.

A-listers such as Gwyneth Paltrow, Tom Hanks and John Krasinski have already posted selfies featuring either their ballots or "I voted" stickers from their polling stations.

Several took advantage of early-voting options to make their voices heard ahead of Tuesday and weigh in on who they want to see control the Senate and the House of Representatives.

A record voter turnout was expected on Tuesday. Thirty-five million early votes having already been cast, topping the 20 million early votes recorded during the last midterms in 2014.

Among those early ballots is that of Gwyneth Paltrow, who proudly posed with her "I voted" sticker in a snap she shared on Monday.

"It's a right not to be taken for granted so I did it a day early and I'm gonna rock this sticker all day," she wrote next to the image.

John Krasinski and Emily Blunt also showed off their ballots in a couple selfie.

View this post on Instagram

#Vote

A post shared by John Krasinski (@johnkrasinski) on Nov 1, 2018 at 11:53am PDT

Mandy Moore, too, cast her ballot early and posed with her "I voted" sticker prominently displayed on her nose. The This Is US star also wore a T-shirt reading "Voting: 100 per cent more effective than complaining on the Internet."

Kerry Washington, too, made sure to vote ahead of time. She used Instagram earlier this week to share a photo of herself with her "I voted" sticker, writing next to the shot: "I did it! Felt soooooo good."

Tom Hanks mailed his ballot and posted a photo of his ballot ready to be taken to the post office.

Mindy Kaling was among the celebrities who displayed their "I voted" sticker on social media.

"Thank you 14th Amendment for letting me vote today! Comment or tag yourself if you feel the same!" she wrote.

Zooey Deschanel, meanwhile, urged her followers from Texas to vote for Beto O'Rourke, Ted Cruz's Democratic opponent.

Justin Timberlake cast his vote via absentee ballot and urged his followers to head to the polls on Tuesday as he shared a photo of himself with his form tucked in an envelope.

Early voter Jada Pinkett Smith pasted her "I voted" sticker on her forehead before snapping a selfie on Monday.

View this post on Instagram

VOTEVOTEVOTEVOTEVOTEVOTEVOTE!!! I did💛

A post shared by Jada Pinkett Smith (@jadapinkettsmith) on Nov 4, 2018 at 12:36pm PST

Blake Lively and her husband Ryan Reynolds filed their absentee ballots ahead of Tuesday's vote. The actor jokingly awarded her spouse the title of "sexiest voter alive" to mark the occasion.

Camila Cabello cast her vote early in her home state of Florida.

Reese Witherspoon confirmed on Tuesday that she had voted and shared a photo of herself on her way back from the polling station.

View this post on Instagram

I Voted! 🇺🇸 ✅ How about you?!

A post shared by Reese Witherspoon (@reesewitherspoon) on Nov 6, 2018 at 8:20am PST

Olympic figure skater Adam Rippon posed with his "I voted" sticker from the ice rink.

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#ivoted 🇺🇸

A post shared by Adam Rippon (@adaripp) on Nov 6, 2018 at 8:29am PST

Armie Hammer, too, showed off his sticker, saying he was "just over here trying to save the world".

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Just over here trying to save the world...

A post shared by Armie Hammer (@armiehammer) on Nov 6, 2018 at 9:50am PST

To figure out how to cast your vote in the 2018 midterm elections, click here.