What should be the requirement for ballot access?

[Redalgo]

I guess it would depend on the type of race but if I had to choose one method to apply in all instances it would be to either: (a.) get signatures from at least 1% of eligible voters for that election, (b.) get the endorsement of a political party whose members include at least 1% of eligible voters for that election, or (c.) to have previously held the contested office in question.*

*Though I suppose that would actually have to be waived in any instances of there being term limitations.