It seems to be implicit in your model that funding for political parties is a negative-sum arms race.
It probably is on the margin. I’d guess that, while if both parties received 99% less donations there might be some kind of adverse effect, if both parties received epsilon less donations the effect would be of order epsilon squared or smaller.
It probably is on the margin. I’d guess that, while if both parties received 99% less donations there might be some kind of adverse effect, if both parties received epsilon less donations the effect would be of order epsilon squared or smaller.