Obviously, a tax credit would amount to a government subsidy for organizations that don't need one. That's not going to do anything to reduce their influence. I

Obviously, a tax credit would amount to a government subsidy for organizations that don't need one. That's not going to do anything to reduce their influence. If you're going to publicly fund campaigns, why not just do it directly? You don't need to tax SuperPac donations separately if you just made it harder for them to get tax-exempt status in the first place (i.e., make them ineligible for 501c4 status, or eliminate that category altogether).