Bush's 2016 remarks kick other potential GOP candidates into higher gears

Jeb Bush’s announcement this week that he’s considering a 2016 presidential run appears to have dropped the starting gate on the GOP primary, with other potential Republican hopefuls like Kentucky Sen. Rand Paul and Dr. Ben Carson following with their own, telltale moves.

The Facebook announcement Tuesday by Bush, a former Florida governor, that he is “actively” exploring a White House bid was followed within hours by two Google ads buys from Paul’s leadership political action committee.

The first Rand PAC ad appeared in the search results of those...