What’s gone less noticed, however, is that Flake – and a growing chorus of Republicans – have begun calling for reform of the very mechanism that helped give rise to Trump and ensured the Republican dominance of Congress and 69 of 99 state legislatures nationwide: redistricting.

In his book, Flake argues that redistricting has made Congress more partisan, more polarized and more extreme. Sophisticated map-making software and a cloud’s worth of demographic detail, consumer preferences and voting patterns have allowed “partisan warriors to carve the country up into 435 of the most ideologically extreme expressions of the American polity.”