When he formally announced his presidential candidacy last year, Sen. John McCain was inches away from making an unprecedented pledge: if he were elected, he would serve only one term as president.
It could have been an earth-shifting moment for the campaign and the primary. At the time, McCain's fundraising pace was falling well short of its target and Republicans were not treating McCain as the frontrunner.
The idea to serve one term had long been discussed among top advisers, and McCain was on board.
A one-term pledge was set to be the central thread of his presidential campaign, and Mark Salter, McCain's chief speechwriter, crafted an announcement speech around it.