So why is it that American political candidates believe that door-knocking is a viable and, yeah, necessary tactic for a winning campaign, but American churches say that this same door-knocking is no longer effective in evangelism?

The super PAC has had upwards of 250 people canvassing the state, targeting the homes of persuadable Republican voters. Thus far, they estimate they’ve knocked on more than 93,000 doors. And by Election Day, they’re shooting to have knocked on 100,000. In any given week, they say, 100 to 150 individual people spend eight-hour days doing the door-knocking. And most of them get paid.

Or maybe door-knocking for evangelism doesn’t work any more because the door-knockers have lost faith.