Before being controversially struck down by the Supreme Court in the Citizens United case, the McCain$-$Feingold Act:

prohibited for$-$profit, but not non$-$profit, corporations and unions from broadcasting "electioneering communication"

allowed political speech by non$-$profit corporations

promoted "electioneering communication" by political parties

prohibited for$-$profit and non$-$profit corporations and unions from broadcasting "electioneering communication"

none of the other choices are correct