Does it really matter what party he was registered for?

He tried to assassinate the leading Republican candidate. Who cares what box he checked when he registered to vote?

You have Democrats and the media saying that if elected Trump will end democracy, and this will be our last election.

If you really believed that Trump was the next Hitler and soon after he's elected America will cease to be a Republic, and we'll be loading people up into extermination camps, who wouldn't justify his assassination? Every normal person would be in favor of it, just like any other tyrannical dictator.

The reality is, that's not the case. Trump is a polarizing political figure and that's it. If he's elected the left will whine and complain for the next four years, just like in 2016. But instead you have some nutcase who decided he would try to kill Trump because he bought into all the vitriol from the left.