How Ideological Purity Is Like the Ebola Virus

What happens is they’re like an Ebola virus that spreads. And if you can keep it contained with this bunch of people that really hate the government, OK, I respect their position. But when the virus spreads and they then have a bunch of people all nervous that if they vote the way they really think they should vote then bad things are going to happen, that messes up the process.— Former Rep. Steve LaTourette (R), quoted by the Wall Street Journal, on the conservative groups that demand ideological purity.