What should be the requirement for ballot access?

[True Federalist (진정한 연방 주의자)]

I'd prefer a hybrid scheme.

For parties that wish to be registered parties, 2.5% of the registered voters sign a petition or vote for that party in a recent major election.
For individuals that wish to be on a ballot as an independent (or an unregistered party), 1% of the registered voters sign a petition.
For individuals who wish to run in the primary or caucus of a registered party, pay a filing fee.

[True Federalist (진정한 연방 주의자)]

None

To cope with the deluge of candidates, use electronic voting machines, or print longer ballots.  Too cumbersome?  Deal with it.  Inefficiency is the cost of a truly free society.

The whole raison d'etre of government is to provide the efficiency that pure anarchy cannot.  There is no compelling benefit to having 200 candidate ballots instead of 20 candidate ballots.  So long as the requirements are not so hefty as to limit the choices to a select few, they are beneficial as they make the task of selecting our government something that the average citizen will have the time to make an informed decision on.