The Kennedy campaign has spent months gathering the signatures required by states to allow independent candidates (candidates without a political party affiliation) to appear on the November ballot. Those signatures are reviewed by state election officials before a candidate is approved to run. Kennedy could also appear on a state’s ballot if he is nominated by a minor party that has already petitioned to appear on the ballot. But many election officials told The Washington Post that they won’t approve such petitions or endorse minor party candidates for several weeks, making it impossible for Kennedy to meet the requirements in time for the debate.