Arizona is winner take all, Utah is proportional unless candidate is over 50% then it’s winner take all. Both are closed, Utah is a caucus and Arizona is a primary. American Samoa is having a convention and its delegates are unbound.
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On the night: Trump picked up 58 delegates, Cruz 40 and the 9 from American Samoa are still unbound.

6:47

Cruz wins big in Utah, with almost 70% of the vote, Kasich second, Trump third.

Sanders smacked Hillary down in Utah.

As well as Idaho, which was scheduled for Democrats today:

11:46

They called it in Arizona with less than 1% in for both Trump and Clinton, both of whom were expected to win.

Utah to come in later which Cruz is expected to win.