Fox News host Sean Hannity called his show “the stop-Hillary express” during the 2016 presidential campaign because of its relentless focus on defeating Democratic nominee Hillary Clinton. But more than two years after President Donald Trump took office, that train is still running.

Hannity mentioned Clinton on 505 of the 587 episodes of his Fox show that he hosted between Trump’s inauguration and the end of August 2019 -- 86% of the total -- according to a Media Matters review. On 31 additional broadcasts, Hannity did not mention Clinton, but one of his guests did. Altogether, that means that the former secretary of state was mentioned on 91% of the episodes Hannity hosted during that period, a total of 536 editions of the program.

The Fox host’s Clinton fixation is largely a reflection of his show’s focus on the dizzying conspiracy theory he constructed to defend Trump from the probe into Russian interference in the 2016 election.

Hannity places Clinton at the center of several key strands of that web. In his telling, 1) federal investigators should have been charging Clinton for crimes related to her email server rather than looking into Trump’s associates; 2) some of the attorneys involved in the probe had conflicts of interest because they supported her election; and 3) the investigators ignored the “real” collusion with Russia that she supposedly engaged in through the Uranium One pseudoscandal and via an anti-Trump dossier that became part of the investigation.

As one might expect given Clinton's recession from the political stage, Hannity’s references to the former candidate decreased in each of the first four months of Trump’s administration. In 2017, he mentioned her in 88% of episodes he hosted in January after Trump’s inauguration, 76% in February, 70% in March, and a mere 39% in April, the lowest total over the course of the study.

In May 2017, however, the figure jumped to 79%, reflecting the host’s response to a spate of damaging stories about Trump and Russia and Robert Mueller’s appointment as special counsel. Hannity’s mentions haven't dropped below 60% in any month since October that year.