Donald Trump’s primary playbook leading him out of bounds

ABINGDON, Va. (AP) — In the 2016 presidential campaign, it's long been an article of faith: The rules of political gravity don't apply to Donald Trump. Maybe now they do.

ABINGDON, Va. (AP) — In the 2016 presidential campaign, it's long been an article of faith: The rules of political gravity don't apply to Donald Trump. Maybe now they do.…