Why do some candidates use the petition as a nominating device?

Many States require minor party and independent candidates to be nominated by petition. At the local level, candidates may be nominated by petitions signed by a minimum number of qualified voters in the election district. it is found most widely at the local level, nonpartisan school posts, and municipal offices in medium sized and smaller communities.

it was known as the aztec empire. the capital was formally named tenochtitlan. *hope this .

can you explain it better