A new study from the University of Michigan and Georgetown found that sustained negative media coverage of the Hillary Clinton email scandal drove voters’ open-ended responses about the 2016 presidential race and favorability toward the candidates.

“The fact that this one story dominated the narrative about Clinton seemed to have an effect on voters… On the other hand, people remembered many different news stories about Donald Trump over time. These stories appeared and disappeared quickly, and no one story made a big impression on respondents.”