What is the voting requirement for amendments to the Arizona Constitution?

The voting requirement for amendments to the Arizona Constitution is indeed a simple majority of voters in a general election. This means that when a proposed amendment is placed on the ballot, it only needs to receive more votes in favor than against from those who participate in the election. This process allows for direct democracy, as the amendment can be approved quickly by the will of the majority of the voting public.

In the context of the other options, the choice of a two-thirds majority of the legislature does not apply to constitutional amendments but rather to legislation. Similarly, amending the Constitution does not require a supermajority vote in both houses of Congress, as that pertains to federal legislation and is not relevant to state constitutions. The requirement for a majority of registered voters is also not accurate because it is not based on the entire pool of registered voters but rather on those who actually cast their votes in the election. Therefore, the correct process for amending the Arizona Constitution is through a simple majority of those actively voting in a general election.