It’s hard to be a moderate politician. It’s also expensive.

It’s tough to make it as a moderate in Congress these days.

Across the country, competitive purple districts have been gerrymandered into oblivion, replaced by seats that are safely red or blue. Activists at both extremes show no mercy toward elected officials who venture to advocate compromise. Even former House majority leader Eric Cantor — hardly moderate — fell victim to a 2014 primary challenge from a tea-party-backed opponent after his immigration stance ran afoul of the GOP’s far right wing. But perhaps most prohibitive: Being a moderate costs far more than being extreme. And the increasing expense means most moderates can’t compete.

Continued at the Washington Post…