Longtime Donald Trump adviser Roger Stone has found someone to blame for the Republican nominee’s recent struggles: campaign manager Kellyanne Conway. Stone has been directly and indirectly jabbing the relatively new Trump official as a “Cruzbot” who isn’t well-versed in politics and wants “to be on television” just to “talk about how smart” she is.

Stone leads the pro-Trump organizations Stop the Steal and Committee to Restore America’s Greatness after previously working as a paid campaign adviser. He still regularly communicates with Trump and is informally advising him. Stone has a decades-long history of employing political dirty tricks, and he regularly spouts violent, racist, and sexist rhetoric.

Conway became Trump’s highly paid campaign manager in August after working for a super PAC that supported Trump nemesis-turned-endorser Sen. Ted Cruz (R-TX). Conway previously attacked Trump for his “unpresidential” language, for having “built a lot of his business on the backs of the little guy,” and for not releasing his tax returns.

Stone has become increasingly displeased with Conway’s campaign stewardship since her hiring.

When the moderators of the debates were announced in early September, Stone tweeted: “Who the hell in the Trump campaign approved these debate moderators?” He then tweeted to someone who agreed with his criticism: “Ask Kelly Ann [sic] Conway who made this boneheaded decision!”

Following the first presidential debate, Conway told CNN that she “thought Lester Holt did a great job." Stone responded on Twitter: “Then you need to learn something about politics #Cruzbot.”