Why did elbridge gerry not sign the constitution?

Elbridge Gerry refused to sign the Constitution for several reasons: * There was no promise of representation for common people * There was no security for the right of election * There were dangerously ambiguous legislative powers * The executive branch had too much influence over the legislative branch * The judicial department could become oppressive * Important treaties could be approved by the president/ 2/3 quorum of Senate * There was no Bill of Rights