Quinnipiac-NJ: Menendez +11

[Tintrlvr]

This is pretty much what happened with him in 2006. Is this other guy a moderate like Kean or a conservative like Christie?

He's a pharma executive with no prior political experience, so there's not much record. He is pro-choice and was prominently unendorsed by New Jersey Right to Life after he made that announcement. He's vaguely anti-tax (said he supports Trump's individual tax cuts and wants to make them permanent but opposes the cap on the SALT deduction and would remove it it), but it's unclear what his actual positions on tax would be as a politician. Overall, he sounds like he'd be the most centrist Republican Senator if elected, although that's not really saying all that much and hard to be sure if that's actually the case or all just posturing for the election since he has no record.

[Tintrlvr]

It looks like the difference between Quinnipiac and the other NJ-Sen pollsters is that Quinnipiac pushed the undecideds.  When it comes down to it, most NJ Dems and Dem-leaners aren't going to vote for freakin' Bob Hugin (R), especially in this particular midterm election.  They don't like Menendez's corruption, but it's not enough of an issue to help Republicans hold on to the Senate.

I believe Vox also pushed undecideds. Unless they removed them from the poll entirely which is bad form

Vox Populi - it's a Republican polling outfit (sort of an equivalent to PPP), not the liberal media website Vox. And they apparently discarded undecideds, as their poll indicates no one responded "undecided". They do the same thing in all of their polls, which is really bad form as you noted.