One of the more interesting political splits is within the beer industry which in this analysis has only one point. Beer brewers tend to be extremely left of left while beer distributors tend to be strongly right leaning.
What is particularly interesting about this combination is that it appears to be the case that both sides are required for business success. Without good brews distributors lose market share and without good distributors brewers lose market share. Maybe in this analysis the brewers are smarties and the distributors are capital rich but that doesn't match my limited personal experience.