Whether the impeachment inquiry concludes with Mr. Trump still president, or Vice President Mike Pence, a traditional fiscal conservative, having ascended to the Oval Office, conservative groups see only upsides, Mr. Potter said.

“They’re not looking at the long-term outcome,” he said. “They’re saying, ‘This is an opportunity to raise money.’”

FreedomWorks, an organization focused on promoting limited government and lower taxes, has taken the lead on messaging on social media, serving as a rapid response channel. The Tea Party Patriots encourages Republican activists to join the “Trump Defense Team,” offering weekly action items that can include reading the memos assembled by congressional Republicans on the committees leading impeachment, following the Republican members of the Intelligence Committee on Twitter, and listening to the impeachment radio show hosted by Stephen K. Bannon, Mr. Trump’s former senior adviser.

“We want to make sure that if people want to get in a discussion, they understand what the testimony is about,” Ms. Martin said. “They have more than just what they’re seeing in the news. It’s important they understand what’s going on and can read it firsthand.”

Local activists can then pass those talking points to their friends and use them in local editorials and social media outreach, she added.

Many of the conservative groups that have joined the “Trump Defense Team” effort have a history of using politically charged debates as fund-raising tools, and several of them are doing so now. Activists are invited to sign a petition to declare their “full support” for Mr. Trump and “reject Nancy Pelosi and the Democrats’ efforts to overturn the free and fair presidential election.” Signers are then prompted to donate to the group, “so we can continue to push back against the Deranged Democrats.”

Ms. Martin did not disclose how much Tea Party Patriots had raised so far, but said that the average donation is $49, and is used to ensure the group’s supporters receive the training and supplies they need to be active.