The Make America Great Again (MAGA) movement around Donald Trump has proven far more successful at capturing both party institutions and mainstream support than both its Tea Party predecessor and Bernie Sanders’s “political revolution.” Why? That depends on who you ask.

Washington Post reporter Isaac Arnsdorf attempts to partially explain MAGA’s recent success in Finish What We Started: The MAGA Movement’s Ground War to End Democracy. Arnsdorf’s book differs from much of the commentary on Trump in that it focuses squarely on the organizational machinations and ideas of the wider layer that gravitates to him.

Finish What We Started follows a range of mostly low-level MAGA figures as they try to make sense of what is happening in American politics and intervene to influence it. The key focus here is the “precinct strategy.” It’s a post-2020 blueprint to seize administrative control of local Republican party branches, then continue the process upward. The end goal is to make sure the 2024 election is won by Trump, no matter what happens on the day.