ATLANTA (AP) — More people have voted early in 10 states than in 2010, and Republicans and Democrats alike say the numbers show they have the advantage in key races for Senate and governor races heading into Election Day.

Registered Democrats have out-voted registered Republicans by 16 percentage points in North Carolina, where Sen. Kay Hagan seeks a second term.

Registered Democrats have a 1 point edge in Iowa, but that's tighter than their usual advantage there. That leaves Republicans confident in the chances of their Senate nominee, Joni Ernst.

A key question about the early vote is which side is turning out voters who didn't participate in the last midterms.