The bar is officially open.

We’ve finally made it to Election Day, with Donald Trump and Vice President Kamala Harris squaring off in what’s expected to be a tight contest, and The Post wants you to liven the night up with our official drinking game.

Whether you’re a Democrat, Republican or independent — and whether you support beer, wine or liquor — grab your preferred beverage and a copy of the rules and follow along with The Post’s live coverage of the big day.

Play for money, play for bragging rights, or just play for fun. And don’t worry, we’ll make sure you keep hydrated.

But first! Prepare yourself with The Post’s guide to what to expect on Election Day and take our Presidential Quiz to test your knowledge of our past leaders.

Whenever polls close in a state. These happen every hour or half hour beginning at 6 p.m. so you’ll be nice and hydrated

Every time someone says this race “comes down to turnout.”

Each time a broadcast says “record number of voters”

Each time a state is called for Kamala Harris or Donald Trump. In the event multiple states are called at once, continue for as long as it takes to name the states called

Whenever the high-energy Steve Kornacki appears with his map (applicable to NBC News/MSNBC watchers only)

Whenever the suave and debonair John King appears with his map (applicable to CNN watchers only)

Whenever Bill Hemmer displays his “Bill-board” (applicable to Fox News watchers only)

Everytime a pundit taps a map to zoom in on counties

Every time someone says ‘blue wall’

If Kamala Harris is projected to win a swing state (Arizona, Georgia, Michigan, Nevada, North Carolina, Pennsylvania or Wisconsin)

If Trump is predicted to win a swing state (same as above)

If Harris or Trump is projected to win the election

Disclaimer: Please drink responsibly