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<p>Like an old warhorse that won’t surrender, Andres Manuel Lopez Obrador is back on the battlefield. On a national tour connected to the 2015 mid-term elections, the two-time presidential candidate (2006 and 2012) is once again criss-crossing Mexico with his message of hope and change. This year, however, Lopez Obrador is on the campaign stump as the chief of a new political party, the National Movement for the Regeneration of Mexico (Morena), that is competing in the polls for the first time.</p>