DEMOCRAT PARTY TURNOUT– In 2008 there were 38,111,341 Democrat votes in the primary. In 2016 there were 29,939,251 votes. A net decrease of 8,172,090 (-21%).
REPUBLICAN PARTY TURNOUT– In 2012 there were 19,214,513 Republican votes in the primary. In 2016 there were 31,108,968 votes. A net increase of 11,894,455 (+62%).
Republicans had 1.1 million more primary voters this year than the Democratic party.