Arizonans are preparing to vote on a state constitutional amendment to allow abortion up to the point of fetal viability.

Impacted voters will receive a full ballot in the upcoming election following a quick decision by the state's highest court on Sept. 20.

Officials say about 218,000 of the state’s 4.1 million voters were improperly recorded as having provided proof of citizenship, as required to vote in state and local elections.

Up and down the ballot, Arizona voters will have an outsize impact on the makeup of the federal government in the 2024 election.

The urban heart of Arizona is home to critical voting blocs and has traditionally gone Republican in presidential elections. Four years ago, it swung to Democrats for only the second time in decades.

Arizona Democratic Senate candidate Ruben Gallego said in 2016 that then-President-elect Donald Trump's campaign drew out the "worst people in the world" who he will never "appeal to."

The Republican Senate candidate is far behind her Democrat rival Ruben Gallego among both likely and registered voters.

The vice president made her first campaign visit to the Southwest border to lay out her border security and legal migration plans.

The announcement from Arizona’s Democratic Secretary of State Adrian Fontes marks the second time officials have found issues with voter registration rolls.

If approved, Arizona’s Proposition 137 would end retention elections for state Supreme Court justices and other judges.

Will Arizona make a significant difference in the outcome of the 2024 election? And is it a swing state? Here's what to know about the state's impact.