dan pfeifferDan Pfeiffer, a top advisor and longtime PR staffer to President Obama, has joined CNN as a contributor as the 2016 election cycle begins.

Pfeiffer was communications director for most of Obama's first term before moving into a senior advisor role after the president's re-election. He started out in political PR with Al Gore's 2000 presidential bid and worked for Sens. Tim Johnson, Tom Daschle and Evan Bayh before joining the nascent Obama campaign in 2007 as traveling press secretary.

Pfeiffer penned his first op-ed for CNN.com June 1, arguing that a fight for the Democratic presidential nomination would be good for the party and eventual nominee.