From the WaPo (can't link, paywall)
Perhaps the most damaging new revelation in the report, according to multiple people familiar with it, is a previously unreported text message in which Peter Strzok, a key investigator on both the Clinton email case and the investigation of Russia and the Trump campaign, assured an FBI lawyer in August 2016 that “we’ll stop” Trump from making it to the White House.
“[Trump’s] not ever going to become president, right? Right?!” the lawyer, Lisa Page, wrote to Strzok.
“No. No he won’t. We’ll stop it,” Strzok responded.