Is it really? Or is that your take? You could just as easily say that it's biased toward candidates who work effectively with a broader range of people.
It's code for above-the-median-wealthy, enough to influence opinion outside of the populist opinion. Why you choose to go partisan over a systemic issue, is beyond me.
- religious groups wanting faith-based educational programs
- farmers wanting crop subsidies (hugely powerful in the US)
- internet users wanting net neutrality
- conservation groups wanting to preserve parks or endangered species
- unions wanting occupational safety regulations
- retirees wanting increased social security
You might even agree with some of these.
http://www.dictionary.com/browse/special-interest-group
a body of persons, corporation, or industry that seeks or receives benefits or privileged treatment, especially through legislation.