A viable candidate is a bit of an oxymoron, but as far as competition, he's one of the few Republican names right now that has clout on both sides of the aisle. He's got a reputation of not taking crap from anyone and speaking his mind regardless of the backlash. His policies are fairly moderate, even liberal on the social front.
I'd say he's got a shot at making some kind of stab at the nomination at least, though I don't see him being radical enough to get the support of the far right or moderate enough to appeal to leftist and independent voters.
I don't see this scandal having a major impact on his chances in 2016, as they weren't that great to start with, and it's a mostly media-tastic scandal, anyway.
Not seeing how he's liberal on the social front outside gun control? He hasn't shown any theocratic tenancies but he's in a blue state coming off a disastrous Democratic gov and Sandy so you'd expect as much.
He's been pro-life after flipping and no Republican candidate will get anywhere near the primary ticket without beating that drum. On gay marriage he tows the Catholic line, tax cuts, charter schools and all the pretty generic checkbox answers you'd get from a generic Republican candidate. I'm failing to see what elevates Christie to being capable of running the nation. He's loud and obnoxious? Doesn't take ***from anyone? Large and incharge? Great, a hothead running diplomatic affairs. Is he gonna tell Karzai to go *** himself? I could get behind that.
Christie has certainly done his piece pulling his state out of the muck Corzine and his cronies puked up and he's certainly more articulate than some of the crazies but I'm seeing alot of hype behind a candidate who we haven't speak on anything outside domestic level issues. I for one think he's going to get Giuliani'd come election season.
But that's just me. President Christie? We'll see.