Based on approval polls, Bernie Sanders is one of the best-liked politicians in America. He has often literally been number 1 in these polls. So I think he does

Based on approval polls, Bernie Sanders is one of the best-liked politicians in America. He has often literally been number 1 in these polls. So I think he does have broad appeal, just not to rich and influential people (who make up a small minority, despite their outsized ability to have their voices heard).