Ben Feldman and wife Michelle's newest addition is due to arrive in the spring, the Superstore actor tells PEOPLE exclusively

Credit: Ben Feldman/Instagram

Ben Feldman has two messages to share: “Get out and vote” — and that he’s going to be a dad again!

The Superstore star and his wife of five years, Michelle, are expecting their second child, PEOPLE confirms.

Speculation began Tuesday when Feldman, Michelle and their 1-year-old son Charlie Milton visited the polls to vote together in the midterm elections. In a photo the actor shared to Instagram (and a video he posted to his Instagram Story), the mom-to-be wore a shirt that read “Voting for 2” over her baby bump.

“We voted as a family because it’s about the future of our children,” Feldman, 38, tells PEOPLE exclusively. “New addition expected spring 2019!”

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Ben Feldman’s wife Michelle
| Credit: Ben Feldman/Instagram

In his Instagram post, Feldman is holding a smiling Charlie — who’s dressed in a gray onesie covered in a fire-truck print — upside down while his mom looks on adoringly.

“It’s an imperfect system. Registration should be automatic. Elections should be holidays. Districts shouldn’t represent the ideas of the partisan hands that drew them. But it still makes me proud to be American,” wrote the Mad Men alum.

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The spouses tied the knot in October 2013 at the Smokey Glen Farm in Gaithersburg, Maryland, and welcomed their first child in October 2017.

“Charlie Milton Feldman was born on the Dodgers’ second home run in the series. He loves sleeping all day and partying all night,” the proud new parents joked to PEOPLE of their baby boy, who arrived weighing 6 lbs. and measuring 19 inches.

Of their son’s name, Feldman explained, “Milton was Michelle’s grandfather and Charlie is a f—ing adorable name!”