- Running for president is a very demanding test of a candidate's qualifications, and Donald Trump is failing, writes David Axelrod
- He says Trump's stumbles over foreign policy, abortion issue, suggests he isn't prepared for demands of the Oval Office
David Axelrod is CNN's senior political commentator and host of the podcast "The Axe Files." He was senior adviser to President Barack Obama and chief strategist for the 2008 and 2012 Obama campaigns. The opinions expressed in this commentary are his.
(CNN)In 2011, as the presidential race was gearing up and many were predicting defeat for President Obama, I reminded a reporter, in judging potential opponents, just how exacting the process of running for president can be.