Mr. Trump himself praised QAnon followers at a news conference last week, describing its adherents — some of whom have been charged with murder, domestic terrorism and planned kidnapping — as “people that love our country.”
QAnon supporters were ecstatic about the comments from Mr. Trump, who until now had dodged questions about the conspiracy theory even as he regularly retweeted some of its followers. Facebook groups used by QAnon adherents, and more obscure message boards where they congregate on websites like 8kun, lit up with users who said they heard in Mr. Trump’s comments confirmation of their belief that he had been sending them coded messages of support since the conspiracy originated in 2017.
The QAnon use of the slogan, “We Are the Storm,” grew out of one of those purported messages from Mr. Trump. In 2017, he quipped during a photo op with generals: “You guys know what this represents? Maybe it’s the calm before the storm.”
Since then, the catchphrase has become a main rallying cry for QAnon believers. They use it to refer to what they claim is a coming conflagration between Mr. Trump and his enemies.
The Texas Republican Party adopted the slogan in late July after Mr. West, a former Florida congressman, was elected as its new chairman. It was soon plastered on the party’s emails and messages, and on T-shirts, hats and sweatshirts that it sells.
The new slogan alarmed some prominent members of the state party, who saw it as a barely coded signal to QAnon followers that they had a home in the G.O.P. In interviews, more than a half-dozen current and former party members, some of whom had served in senior roles within the party, shared their concerns, describing a party that was increasingly dominated by far-right ideologues.
Some in the party, the party members said, shared the QAnon belief about the government being dominated by pedophiles, and others were more than willing to court the conspiracy theory’s followers if it meant keeping Democrats from making gains in elections this November.