On cutting-edge voter data, Trump critically behind Clinton

PHILADELPHIA (AP) — Donald Trump trails Hillary Clinton by months, even years, in using fast-evolving digital campaigning to win over voters, data specialists working with the GOP say.
The presumptive Republican presidential nominee has dismissed the science that defines 21st century political campaigns, a tool that President Barack Obama used effectively in winning two terms and the Clinton campaign has worked on for nearly a year.
And while it is too early to tell whether the late start