A Closer Look At 2016???s Campaign Dropouts

It is still almost three months before the first votes of the 2016 presidential primaries will be cast, but already the campaigns of three Republicans and two Democrats have come to a close.

This week, Louisiana Gov. Bobby Jindal was the latest to call it quits.

???I???ve come to the realization this is not my time,??? Jindal said in an interview with Fox News on Tuesday announcing an end to his nearly five-month-long White House bid.

Last month, long-shot Democratic contenders Lincoln Chafee, a former governor of Rhode Island, and Jim Webb, a former U.S. senator from Virginia, both cut short their presidential campaigns within a few days of each other. And in September two Republicans -- Wisconsin Gov. Scott Walker and, before him, former Texas Gov. Rick Perry -- pulled the plug.

???I believe that I'm being called to lead by helping to clear the field in this race so that a positive conservative message can rise to the top of the field,??? Walker said at a news conference on Sept. 21.

So...