Many who wanted New Jersey Gov. Chris Christie (R) to run for president in 2012 — and who have been urging him to jump into the 2016 race — did so because he was viewed as the most electable Republican.

But a new NBC News/Wall Street Journal poll shows how tough it will be for him to rebound from his recent political scandals.

More Americans now view Christie negatively than positively, by a margin of 29 percent to 22 percent. That's a sharp reversal from a similar poll three months ago, when 33 percent viewed him positively and 17 percent viewed him negatively.

Worse, Christie is no longer viewed favorably by Democrats, women, or independent voters. All three groups viewed him favorably just a few months ago. Even among Republicans, Christie is only viewed favorably by a lukewarm 32 percent to 20 percent.

Christie was never loved by the Republican base, but it's clear his crossover appeal has now deteriorated significantly.

Without holding the electability card, Christie has little chance of winning the Republican presidential nomination. It's just one more example of how quickly fortunes can turn in politics.