There are two problems. First, while most leftist media outlets, whether old school outlets like the Washington Post and NBC or podcasts like The Young Turks, repeat the same talking points, even as in the case with TV, saying almost word for word the same narrative. In contrast, the conservative and alt-right media have a problem in staying on task. The old joke about herding cats applies here. While having less reach and mostly confined to talk radio from 1990 through 2015, the various talkers were to a great extent imitators of Rush Limbaugh, so the narrative remained consistent. However, with the rise of neo-isolationists like Thomas Massie and alt-right podcasters who are either libertarian or conspiracist, the latter flirting with 1920s-1930s anti-Semitism, there is a disparate message. Tucker Carlson, Alex Jones, and Candace Owens dispute sizable portions of the Trump Administration actions, with podcasters like Nick Fuentes totally off the MAGA reservation. As a result, we have the conservative base, particularly young white men, possibly turned off by or even against Trump. There is a factor of conspiracy theory addiction, where the latest revelation of evil actions becomes fodder for disaffected listeners to many alt-right podcasters.
Second, there has been insufficient effort to break the political and financial power of the Left, specifically the Democratic political machines. To some extent, Trump's hands have been tied by a combination of blue states fighting Administration demands, Clinton/Obama/Biden appointees to lower Federal courts, and reluctant RINOs in Congress. However, the President does not have anything like full control of the Executive Branch and there are still large numbers of Obama/Biden stay behind networks.
If the Republicans plan to survive the midterms and hold their majority their approach must be methodical and precise.
Goal: Get the base to turn out in large numbers.
Tactic 1: Focus groups with the base around the country to find out what their top issues are.
Tactic 2: If the base is telling the administration that changes need to be made the administration needs to make those changes. Quickly—and with massive publicity.
Tactic 3: Generate standard talking points that are converted into consistent messaging on sympathetic platforms.
Tactic 4: Rinse and repeat with party gatherings of all kinds.
If you focus on turnout of your base you win in midterm elections. If you fail to do so you lose.