What do you think third parties need to do to be taken more seriously by both the American Electorate and the two major parties in this country?

What do you think third parties need to do to be taken more seriously by both the American Electorate and the two major parties in this country?

Democrats and Republicans make election rules which it make it difficult for third parties to influence elections, however, third parties can be influential if they are taken seriously by the voters and the media. How do third parties do this? What do you think third parties need to do to be taken more seriously by both the American Electorate and the two major parties in this country?