CBS News poll: Trump leads in Iowa and New Hampshire, where retail campaigning hasn't closed the gap

The conventional wisdom is that retail politics — the door-knocking, hand-shaking grassroots campaigning for months before the primaries — make Iowa and New Hampshire different from what we see nationally. And like a lot of conventional wisdom these days, that's looking outdated.

Today, national frontrunner and former President Donald Trump also leads the Republican primary field comfortably in both Iowa and New Hampshire. And most of his supporters are backing him enthusiastically. His current margins would translate to him getting half of Iowa's delegates and the lion's share in New Hampshire.

GOP voters in both states overwhelmingly say their focus is on national, not state, issues.