Compromise is essential to successful governance in the US. Unlike business CEO’s, government CEO’s — e.g., mayors, governors and presidents — need the consent of others to move forward on virtually any policy. E.g., to move legislation, a California governor needs the consent of at least 61 (and sometimes 91) out of 120 legislators. This is why diligent political donors should include an evaluation of the candidate’s temperament. Some temperaments are not well-suited to political environments.