Robert F. Kennedy Jr. has his running mate, completing what has so far been the highest-polling independent presidential ticket in more than 30 years.

Not since Ross Perot first ran for president in 1992 has a candidate polled as well for the White House without a major-party affiliation. Perot even led former President George H.W. Bush and his eventual Democratic successor, then Arkansas Gov. Bill Clinton, head-to-head at one point.