US midterms 2018: Immigration key election issue in Arizona

Immigration and fear of a migrant caravan in Mexico are influencing the voters in Arizona.

by

    In Arizona, a closely fought race could see the state's first Democratic senator in 30 years.

    And with the state bordering Mexico, immigration has re-emerged as a defining election issue.

    Al Jazeera's Heidi Zhou-Castro has more.


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