Partly as a result of 24/7 cable news and its unending political coverage, politics today is simply another form of entertainment. A spectator sport at best.

We know the names of all the players. Nate silver homogenizes sports and election statistics as if we all had political bookies. We’re angry and we want purity tests for our candidates.

What we’ve lost sight of in all of this is what politics is actually for. It is, at its core, only about the wielding of power to accomplish something. Success comes not from shouting, or self-righteousness, or the sanctity of one’s views, but from the ability to muster the requisite number of votes.

This is true whether it’s about pre-existing conditions and guns or about filling a pothole or paving a road in your community.

Political science professor Eitan Hersh explains this in Politics Is for Power: How to Move Beyond Political Hobbyism, Take Action, and Make Real Change.

My conversation with Eitan Hersh: