Volunteer election clerks Allie Green Jr., left, and Paul Tryhus, right, briefly leave a Fiesta Mart supermarket, a polling location, to place voting signs, before polls open in Austin, Texas on Tuesday, March 1, 2016. Republicans will vote in 11 states, with 595 delegates at stake. Democrats will vote in 11 states and American Samoa, with 865 delegates up for grabs. Some states have contests Tuesday for only one party. (AP Photo/Tamir Kalifa)
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