Republicans painted Long Island completely red Tuesday night with the party’s candidate Ed Romaine winning a landslide victory against Democrat David Calone to become Suffolk County executive.

The GOP now occupies all the countywide seats in Nassau and Suffolk Counties — both county executive seats, the district attorney and comptroller’s offices, as well as all four congressional seats.

Romaine sailed to victory with 56% of the vote, beating Calone by more than 26,000 votes.

“This is a political earthquake,” said former US Sen. Al D’Amato.

Longtime analysts of Long Island politics said they could recall only one brief period in the last 60 years when the GOP was this dominant