Most estimates put it more in the 60 percentile, however, by their standards that would be an election landslide. It's also more about this quote which has (incorrectly) been attributed to Thomas Jefferson, and several other Founding Fathers: "When government fears the people, there is liberty. When the people fear the government, there is tyranny." It's what fuels American "militias" and the "Deep State" conspiracy theorists.Complicated for sure. More than 80% of Americans are in favour of things like background checks and assault rifle bans but a small core of republicans with the filibuster refuse to move on it.
They have the right to bear arms so they can protect themselves should the British invade. No one told them they're not coming.
As long as the core of Republican voters scream "MAH FREEDUM!!" and quote Charlton Heston, reasonable gun control in the USA will remain a pipe dream. As I implied, above, their election margins are weighed in single percentage points. No one is going to give up a sliver of an advantage for a little thing like the lives of children. Yeah, I'm a cynic when it comes to their politics.