This piece in Axios suggests that the Harris campaign sees some opportunities beyond the big upper midwest as their route to victory. Whether that’s real or just a feint, it’s probably a good sign that they’re able to spend money and deploy resources even if it’s just to force the Republicans to do the same: Georgia, Arizona and North Carolina — which had looked to be trending toward former President Trump — are suddenly crackling battlegrounds online, on the airwaves and on the ground. Pennsylvania is still the most important state where both campaigns are going all-in. But the Harris campaign is fielding an army of enthused volunteers and piles of cash as it eyes a broader field of play.In the past two weeks, the Harris campaign has added 370,000 new volunteers — including 15,500 in Georgia, 21,000 in Arizona, and 10,500 in North Carolina — three states with diverse or changing electorate. In Georgia, 100,000 votes are up for grabs, former Lt. Gov. Geoff Duncan (R) told Axios in an interview. “Kamala Harris puts all of those votes back in play,” Duncan said. “The Number 1 excuse that I heard [about Biden] was: ‘My gosh, he’s just so old. I just can’t imagine him governing for four years.’ She takes that risk of physical and mental failure off the table.” In Arizona, the campaign has trotted out border mayors who have endorsed Harris. And Republican Mayor John Giles of Mesa has also endorsed her. In North Carolina, which has voted for a Democratic president just twice in…