Threshold

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Threshold

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Focusing on winner-take-all states was important to John McCain's strategy; the 15 percent viability threshold prevented John Edwards from getting many delegates; and the proportional representation rule that Democrats have used universally since 1988 is keeping the race for that party's nomination running long after Super Tuesday.
Still, Doerflinger holds out the possibility for "testing" and "potential modification" of Roe in three areas: (1) The meaning of "the compelling state interest in unborn life after viability"; (2) the significance of medical data that may push the viability threshold back to the twentieth week of pregnancy; (3) parental notification of requests by minors for abortion.
In high-income countries, current viability thresholds are typically reported to be between 22 and 24 weeks of GA (15-17).