What if wealthy Republican businessman Douglas R. Forrester beat Sen. Jon S. Corzine in the 2005 N.J. gubernatorial election? Would he have ran for reelection in 2009? What would his political future have been?
The biggest thing I can see is no Christie.
The 2016 Presidential Election would be pretty much the same.
No Christie means that Marco Rubio comes second in New Hampshire(no debate glitch) and it probably becomes Rubio vs Trump, which head to head polling showed was much worse for Trump than Trump vs a divided field and likely ends with a Rubio victory and either President Rubio or President Clinton, both of whom would be better than Trump.