http://www.slate.com/articles/news_and_politics/politics/2015/01/jeb_bush_announces_his_leadership_pac_the_former_florida_governor_promises.html

Jeb Bush is playing offense by playing catch-up. He announced Tuesday that he’s formed a leadership PAC called Right to Rise, which, if you're a person considering a presidential run, is as compulsory as releasing a weightless biography. A leadership PAC allows you to raise money, hire staff, commission polls, and prepare the infrastructure necessary to start an official campaign. That’s why all the candidates who have been preparing to run in 2016— Sen. Marco Rubio, Gov. Rick Perry, Sen. Rand Paul, and Sen. Ted Cruz—created PACs long ago.