Polls may be overestimating support for third-party candidates

Early strength for independents like Robert F Kennedy Jr is likely a mirage

The polls suggest that about 20% of Americans, on average, would support a third-party candidate for president if the election were held today. The average at RealClearPolitics — which I usually don’t recommend using but, in this case, is the only option (for now) — has Trump at 39% Biden at 36, Robert F Kennedy at 16 and Cornel West at 4. That would be…