He co-authored How to Rig an Election (2018) and authored Corruptible: Who Gets Power and How It Changes Us (2021) and Fluke: Chance, Chaos, and Why Everything We Do Matters (2024).
[3][dead link] He earned a BA (Summa cum laude) from Carleton College (2008), where he was elected to Phi Beta Kappa.
[citation needed] After completing his DPhil, he was a Fellow in Comparative Politics at the London School of Economics.
Klaas has been an associate professor in global politics at University College London since.[when?]
In 2010, he was policy director and deputy campaign manager for Mark Dayton's successful bid for governor of Minnesota in 2010.