This chapter studies the voting behavior of members of the House of Representatives. If the presence of Fox News in a district shapes potential candidates’ perceptions about district party composition and the constituency’s electoral preferences, there are good chances that the same can be said of sitting House members. Here, of course, the expectation is not about how these perceptions affect the decision to run for office; instead, they affect decisions about how to perform so as to stay in office. Much like potential candidates, sitting members of Congress have to make inferences about what their constituents want. Typically, they make these inferences based on their perceptions of the partisan composition of their district, among other considerations. If sitting members are influenced like potential candidates, Fox News might shift their perceptions in the direction of thinking their district is more right-leaning. Alternatively, based on our evidence from Chapter 3, they might feel more vulnerable to challenges from potential candidates to their (ideological) right. In either case, a reasonable expectation, which we find evidence for, is that member roll call votes will move in a rightward direction, especially among Democrats representing more competitive districts.