As liberal states lose conservatives to conservative states. And become more liberal!-----Iowa Voters Add Right to Keep and Bear Arms to Iowa Constitution

Iowa Voters Add Right to Keep and Bear Arms to Iowa Constitution - The Volokh Conspiracy

• After this, only five states (California, Maryland, Minnesota, New Jersey, and New York) won't have such a provision in their state constitutions....
• For lists of the current and past state constitutional provisions as of 2006 (a few have been added or changed since), both by state and by date, see here.