Not from the US and I don't understand why one would support a candidate just because he survived an assassination attempt. Can somebody explain the logic behind this?
I guess it made him look stronger or cooler or something. He'll probably also use this to say that Democrats are trying to kill him, insinuating that they don't mind killing people to achieve their goals.
Depending on how the event is spun (story-wise), an attempt like this could make the other candidate's party seem unhinged enough that one of their members would do (and apparently fail badly at) this. This, making the target, and their party by association, seem more noble than thay may be.
To a lot of people, whether the shooting is or isn't affiliated doesn't really get questioned no matter what they hear, as what party would hurt itself? They'll immediately think there is some conspiracy (the human psychology loves these rabbit holes) to make it seem like any favoring affiliation to the target's political side is staged by the other.