According to the American Third Position’s web site, Alexa says that more visitors have recently been to that web site, than to the web page of the Democratic, Republican, Libertarian, Green, or Constitution Party’s web pages. See here.
The party’s recent post gives the rankings (among all web pages) for each of those six parties. If all web pages were listed in the order of how many people have visited, the most-visited web page on the entire list would have a ranking of “one”. Therefore, web pages that try their best to attract as many visitors as possible are happier with a smaller number than a larger number. The numbers, according to American Third Position, are: American Third Position 18,409; Republican 19,544; Democratic 24,356; Libertarian 24,423; Green 125,027; Constitution 167,893.
The American Third Position is not ballot-qualified in any state and has never had any candidates for federal or state office, unless it has had some stealth member-candidates running in Democratic or Republican Party primaries.