You probably shouldn't test GENERIC GOP when there are actual GOP CANDIDATES.
individual candidate quality matters. Donnelly probably trails Generic GOP but he's running against a clown car (and Mike Braun, though some dirt seems to be coming out on him).
The thing is this poll doesn't even show Donnelly trailing Generic GOP. It shows Generic Dem trailing Generic GOP. It's that useless.
Donnelly isn't a generic Democrat. Donnelly is unopposed in the primary. There isn't even a generic Democrat running.