They're waiting to see what constituent polling says before forming opinions and that won't happen until at least Monday morning.
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Predictions: 
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Lisa Murkowski: Slight chance of morality trumping polling. I say 50/50 odds of siding with American ideals over Trump.
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Dan Sullivan, aka Ohio Dan, aka Tehran Dan: Now, Dan's a Republican Party man first and foremost so I give him 75 percent chance of siding with Trump (and milquetoasts Ryan and McConnell) with a rubbery 'Let the courts decide'.
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Don Young: Potato