Major party nominees for president are decided by these representatives
Since 1976, 
in fact, no major party convention has opened with the identity of the nominee ... 
aimed at making sure party faithful choose the most representative,... [DOC] [TLE] How the U.S. Presidential Primary System Works - Council on ... [PAR] Feb 9, 2016 ... Every four years, U.S. presidential candidates compete in a series of state 
contests to gain their party's nomination.