Making Hillary the DNC candidate makes it more likely that Trump will be president. Voter Turnout for the Democratic primary so far has been down in every state, down 28% in Iowa, 13% in New Hampshire, 33% in Nevada, and nearly 35% in S.Carolina. Party leaders have seemingly hosted fewer voter registration drives. In some cases, party leaders are just skipping them altogether in many states and at college campuses, curious move, unless they are afraid that bringing in new voters hurts the preferred candidate's chances in the primaries.
In all four states where Republicans have voted, they have broken the all-time records for voter turnout for each and every state. Lincoln Chaffe could have been the Republican candidate and Hillary on the DNC ticket would drive record turnout among evangelicals and conservatives for the RNC.