I agree that victory is the priority and Joni Ernst has a lot of positives. She won Iowa statewide by 8+ points in 2014. Granted it was an off year election, nonetheless Trump needs to improve his numbers with women voters. If she could help him do that, and gain Iowa, she would be a great VP selection.
And we lost Iowa last time. While I think she helps him with women voters, even Iowa’s 6 EV’s will be crucial in November.
The election will likely be very close, and every EV will matter.
A hog farmer might sell in Iowa but would be a turnoff in other states. They would nail her for animal cruelty and lit would be relentless.