Why does a candidate needs the support of one of the major political parties?

A candidate needs the support of one of the major political parties to gain access to essential resources, including funding, organizational infrastructure, and a broad network of volunteers and supporters. This backing can enhance their visibility and credibility among voters, making it easier to communicate their platform and connect with constituents. Additionally, party affiliation often provides a candidate with a built-in voter base and can help mobilize turnout during elections. Overall, major party support significantly increases a candidate's chances of success in a highly competitive political landscape.