The Trump campaign should do TV ads, showing the text, all during the Dem Convention next week. It’ll really piss off the Bernie-ites, and at least get a BUNCH of them (maybe literally a few hundred thousand) to stay home. I don’t really have much hope of them voting for Trump (though some will do so, of course), but if they (i.e. normally solid Dem voters) stay home, that’s a big victory for both Trump and the national/local Republican Party.
If Trump’s campaign doesn’t want to do this itself (maybe it is a bit unseemly, and Clinton didn’t say much during the Republican Convention), then certainly one of the PACs backing Trump can do it.
We have about 100 days to pound Hillary into the dust - given that she and the Dems will cheat for all they’re worth, our side has to hit her literally every single day. This would be a good start, and will tank her poll ratings.
Many Berners are going to write him in ... which of course is a vote for Trump, perhaps balanced by those GOPers voting protest for Gary Johnson.