How politics has poisoned the Evangelical church

Back in June, the Atlantic Monthly had a lengthy and compelling article by Tim Alberta (no paywall) on how in the US divisions are opening up in Evangelical churches and indeed in Christian churches in general. I found it absorbing, and it is difficult to know where it will lead — but it is pretty clearly not to a stronger Christian church, since in many of the churches Christianity has taken a back seat to conservative politics, which now is the focus.