Senate Minority Leader Mitch McConnell will attend a fundraiser for Arizona Republican Blake Masters later in September, a source familiar with the scheduling told the Daily Caller.

McConnell attended a similar fundraiser for Masters Tuesday evening, where the two Republicans had a “good meeting,” the source said. The planning represents a hatchet-burying for the GOP Senate leader and the ex-venture capitalist.

McConnell and other top Republicans have reportedly worried at length about numbers showing Masters trailing incumbent Democratic Sen. Mark Kelly in both fundraising and polling.

The Masters campaign did not immediately respond to the Daily Caller’s request for comment for this story.