In 2015, Trump officially declared his candidacy for President of the United States almost in the middle.
Cruz, March 23; Rand, April 7; Foam Boy, April (lucky) 13; Dr. Carson and Cardboard Fiorina, May 4; Huckabee, May 5; Santorum, May 27; Pataki, May 28; Linda Graham, June 1; Rick Perry, June 4; ¡Yeb!, June 15.
President Trump declared June 16.
Jindal, June 24; Krispy Kreme, June 30; Scott Walker, July 13; Mailman Jr Kasich, July 21; Jim Gilmore, July 30.
Officially - but unofficially, Trump wasn’t even in the mix until just before formally announcing. The 15 Dwarfs spent YEARS trying to get their names out before officially announcing.