Former President Bill Clinton is preparing to deliver his 12th address to the Democratic National Convention [Video]

In Bill Clinton’s prime-time speech at the Democratic National Convention in 1988, the young governor of Arkansas bored delegates so thoroughly that they cheered when he said, “in closing…” Many years later, as a former president whose legacy had made a comeback, Clinton aided Barack Obama’s reelection with a 2012 convention address that earned him a nickname as the “secretary of explaining stuff.”The 78-year-old Clinton, a veteran of convention speeches over the past four decades, knows as well as anyone the difference between a good and a disastrous performance. What’s less certain as he prepares to deliver his 12th convention speech Wednesday is the impact he’ll have on a party trying to prevent Donald Trump from returning to the White House.Clinton’s political journey, from Little Rock to the White House and later to elder statesman status, can be traced in part through his evolving role at the Democratic National Convention …