Yea, but 2.99 million people voted Democrat in 2012, compared to 2.68 million for Republicans. There isn't enough evidence that Trump is getting new GE voters, just that he's getting more primary voters than ever before.
Pretty much. Politico and The Atlantic did pieces on this. Trump isn't really bringing in waves of new voters, he is just getting Republicans who typically only vote in the general election to vote in the primary. Plus, their primary had a lot of candidates and a lot more investment, combined with the fact that the party out of the White House always tends to have more competitive/higher turnout primaries.
http://www.politico.com/magazine/story/2016/05/donald-trump-2016-polling-turnout-early-voting-data-213897
