Read John Baer’s entire Daily News column here:

THERE’S no mystery behind what looks like a surge for Pat Toomey.

Elections turn on windows opening at various times on various issues. Toomey’s benefiting from an open window with a view of a sour economy.

And in the Senate race pitting Republican Toomey against Democrat Joe Sestak, at the moment little else matters: If that window stays open on the same view, you might want to get used to calling Toomey “Senator.”