This post was updated at 12 p.m. ET
The 2016 presidential race has attracted the widest and most diverse field of major candidates in anyone's memory. Yet, even in this crowd, Donald John Trump Sr. stands apart. On Tuesday, he joined that field, two days after his 69th birthday.
Donald Trump, or "The Donald" as he often styles himself, has high national name recognition as a billionaire real estate developer and TV celebrity.