New Jersey voters just got great news: Though their state leans blue, the race for governor this year won’t be a cakewalk for the Democrat, Rep. Mikie Sherrill.

Indeed, an Emerson College/PIX11/The Hill survey out Thursday had her locked in a dead heat with former Assemblyman Jack Ciattarelli (R); each drew 43% support.

That’s not much different from an internal Ciatarelli campaign poll, which put the Republican ahead 46% to 45%.

And it amounts to a siren blast signaling that the GOP has an excellent chance of winning — and that the national Republican Party should pull out all the stops to push Ciattarelli over the top.

The poll shows voters sick of the awful reign of outgoing Democratic Gov. Phil Murphy , who faces a dismal 35% approval rating.

It also finds Jerseyans ranking th

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