interstate agreement; national popular vote.

Arizona's SB 1300 would adopt the National Popular Vote Interstate Compact, requiring the state to award all presidential electors to the candidate winning the national popular vote *if* participating states collectively hold 270+ electoral votes. The bill amends Arizona law to align with the compact's rules: when in effect, Arizona's electors would cast votes for the national popular vote winner, not the state's winner. This directly affects Arizona's electoral process and presidential election outcomes, shifting from winner-takes-all state results to a national vote tally. The change would take effect only after enough states join the compact to control a majority of electoral votes (270+), as specified in the compact's Article I.