A pint-sized pup is keeping harried Hillary Clinton staffers calm.

A tiara-wearing 6-year-old Pomeranian-Schipperke mix named Winnie has become the mascot of Clinton’s Brooklyn headquarters, cheering up weary staffers slogging through 2016’s interminable presidential race.

Clinton tech team member Timothy Ball, 39, started bringing her to work last November, reading her media clips in the morning, keeping her under his desk and taking her for walks in Cadman Plaza.

She has become a darling of Clinton’s hoodie and jeans-clad staffers who fed her Cheetos, pizza scraps, and leftover pieces of fried chicken during Clinton’s televised speeches and late-night strategy sessions.

“I’ve never heard her bark. She’s the most chill dog I’ve ever seen and totally unflappable — just like our candidate,” said campaign software engineer Rachel Cantor, who runs Winnie’s Facebook and Instagram feeds.

Winnie has modeled Clinton campaign T-shirts for toddlers, taken selfies with songwriter Carol King and actress Yael Stone, and has been animated in a new campaign app designed to get supporters to volunteer.

She only met Clinton once when the nominee made a visit to the campaign’s 11th Floor Pierrepont Street office in July.

“Hillary was walking around and meeting all the teams, saw her, and said, ‘Oh there’s a dog on the desk!’” Ball said.