The word is going out quietly to Republican activists across New Jersey: If you’re going to the GOP convention in Tampa next month, be sure to be there by Tuesday night, Aug. 28, because Gov. Chris Christie is going to be giving the keynote speech that night.

“We’ve been told that’s the night to be there, that’s when the governor is going to speak. They’re saying he’s the keynoter,” one top party activist told The Post yesterday.