I think there are a couple flaws in your logic. One, $50k is $50k and spends the same whether you make $174k or $1M. It’s money you didn’t have and now you do

I think there are a couple flaws in your logic. One, $50k is $50k and spends the same whether you make $174k or $1M. It’s money you didn’t have and now you do and if it’s completely legal to receive it, why wouldn’t you take it? I would at either level of salary if it was legal and was an interest I wasn’t morally opposed to. Generally donations to garnish support will be for things that are not going to go directly against the politician’s morals—assuming they have morals.. If they are willing to take the donations and entertain special interest money, they are willing to take it despite their income high or low. Another is assuming that the price to buy support is fixed and the coffers are limited. The price might be $50k because perhaps that is the sweet spot on your target, but support and donations will go higher if needed and the special interest is motivated to garner support.