How Trump can ensure a blowout against Shillary in the general election

Legalize Marijuana, coming out of nowhere with this platform he could steal a huge amount of democratic voters from her and claim to boost the economy making America great again. Just like it was before we outlawed one of the highest grossing crops in the nation. He could pardon many of the people in prison putting them back to work and making America great again. Hillary wouldn't be able to change her position without looking ridiculous and Donald doing something like this would just further add to his attractiveness as a president.