Dan Coats literally dropped in from North Carolina 6 years ago and had no problem to win.
I doubt it's any different this time.
Well, he had that trademark (R) next to his name. No petty residency thing matters if you have that in Indiana.
It was definitely an issue in the 2010 primary, though Stutzman wasn't well known enough to gain the traction to take him down. As I said back then, had Stuztman been given another month to campaign, he would be the incumbent senator right now running for reelection.
Residency was also a big reason for Lugar's (R) loss in 2012. I think your statement is bogus; this has been a bigger issue in the past with Republicans than Democrats. Considering we lost the other senate seat over this issue, I think it is a fair point for Young to bring up.