Bringing up certain bogeymen (or bogeywomen) in an effort to increase fundraising and voter turnout has been done by both parties in the past.
After all, Obama ran against George W Bush TWICE in the '08 and '12 elections despite the fact that Bush's term ended in '08. The '08 election was basically a referendum on Bush's term in office, and Obama repeatedly compared his '12 opponent Mitt Romney to Bush and insinuated that voting for Romney would be like voting for a 3rd term for Bush.
If you go back and watch the 2012 debates, an actual question that was asked by one of the debate moderators first to Romney and then to Obama, was literally "how are you / your policies different from that of George W Bush?" Now imagine a debate moderator asking whoever Trump's opponent in '20 is "How are you different from Hillary Clinton?" It would never happen.
On 2/24/13, MB1025 said:
You know I was always wondering why no one ever used the dollar sign for $ony, but then I realized they have no money so it would be pointless.