Jeb Bush is famous for being related to the Bush Dynasty and will attempt to become the third and hopefully last Bush president. Jeb Bush was extremely loved by the corporate backing of the Republican Party and was set to win the Republican Nomination.
Another example of Jeb Bush's pussiness is that Jeb Bush has been seen as a possible candidate since 2012, however he has never stated any interest in the position since. It wasn't until 2014 that George had to explicitly say that his brother wanted to run and still Jeb was hesitant. It wasn't be until June 15, 2015 that he announced his "decision". The next day, he immediately lost.
On February 20th, 2016, Jeb finally dropped out of the race, putting his failing campaign out of its misery.