This chapter explores the impact of presidential primary campaigns on House and Senate primary races, looking at the relationship between presidential and nonpresidential primaries, and evaluating the effect Donald Trump had on candidate emergence and strategy. Few candidates wished to associate themselves with Trump, yet the Republican presidential primary so dominated media and public attention that Republican primary candidates who might have flourished in any other year, such as conservative, Tea Party–style candidates, were unable to garner attention or raise as much money as they might otherwise have. Moreover, even in the handful of primary races featuring so-called “mini-Trumps,” there were few in which attention to gender issues or misogynist rhetoric played a role. The chapter documents these findings by comparing 2016 to prior election years with regard to primary competition, turnout, and spending, and examining congressional primaries in which Republican candidates were overtly compared to or endorsed Donald Trump.