evidence: Interviews with dozens of Robert F Kennedy Jr supporters here point to a paradox about the independent candidate, one of the biggest wildcards in November's presidential election. [...] Mr Kennedy is consistently polling in the teens or high single digits, percentage-wise. By all indications he is the most popular independent or third-party candidate in decades. [...] "Despite the dreams of the liberal echo chamber, Kennedy is an existential threat to Joe Biden not President Trump," Mr Hughes said in a statement, citing Mr Kennedy's views on taxes, fossil fuels and gun control. "That's why Biden and his liberal cronies are desperately fighting to keep Kennedy off the ballot in several states."