Here's video from his announcement rally:
Christie joins thirteen other Republicans running for President: Jeb Bush, Ben Carson, Ted Cruz, Carly Fiorina, Lindsey Graham, Mike Huckabee, Bobby Jindal, George Pataki, Rand Paul, Rick Perry, Marco Rubio, Rick Santorum and Donald Trump.
There are only two other major candidates expected to join the race now -- Wisconsin Governor Scott Walker (July 13th) and Ohio Governor John Kasich (July 21st).
As busy as this election cycle seems to be, we're actually "behind schedule" when compared to 2008 and 2012. By this point in 2008, there had already been 3 televised debates (starting on May 3rd), and in 2012 there had been two (starting on May 5th). This time around the first debate is set for August 6th.