If I Were a Senator or Governor Who's Also a Presidential Candidate,
I'd file an amicus brief in the Supreme Court's Second Amendment case supporting the individual right to bear arms (but with room for an unspecified range of "reasonable restrictions"). I'd then tout my position, and question the views of those of my rivals who didn't file such a brief.
Not that I'd expect the brief to matter much to the Court -- but I'd think it would be pretty good for my campaign, certainly if I'm a Republican but maybe even if I'm a Democrat who wants to appeal to the many pro-gun-rights Democrats and independents. Or am I mistaken?