Nassau County Executive Bruce Blakeman is heading out of Long Island Thursday to stump upstate as he weighs whether to jump into the race for governor.

Blakeman, who won re-election by a convincing 12 points last week, will start his tour on his home turf in Massapequa — where he kicked off his campaign for county executive — before heading up to the Hudson Valley and Albany.

He’ll then leap to the North Country, the home turf of Republican Rep. Elise Stefanik, who has announced her bid to take on Democratic incumbent Gov. Kathy Hochul.

“At the urging of many people around the state, I am heading up to the Hudson Valley, Capital District and North Country in order to gauge the level of support for a potential candidacy for governor,” Blakeman said in a statement to The Post.

“I am look

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