Limbaugh has said repeatedly on his show that he hasn’t endorsed Walker, but he has touted Walker over the last two years as “the blueprint for the Republican Party if they are serious about beating the Left.”

But at the beginning of the month, Walker seemed to have been forgotten by the host. Limbaugh didn’t mention Walker in a single segment between Jan. 8 and Jan. 26. Two days after Walker spoke at the Iowa summit, Limbaugh was one of many lauding a speech that yielded a standing ovation.

The speech was the first major sign that Walker could compete with bigger names in the Republican primary field. A string of polls in Iowa and New Hampshire over the next two weeks showed Walker to be well-liked and competitive with potential rivals despite not having nearly as much name recognition.

Limbaugh has credited himself for casting Walker in a presidential light, and he linked his show to the supporters who have joined the “Scott Walker bandwagon” since the end of January.