Now Warnock is trying to draw Walker into a debate to further expose the Republican’s erratic rhetoric.

“We’ve got some strong candidates. Some that, I think, are less strong,” said Sen. Mitt Romney (R-Utah). “Let’s just say Herschel Walker, I think, is having a hard time getting his running legs back.”…

Still, one Republican operative involved in Senate races said behind the scenes that, earlier this summer, “there was almost existential concern” about the Walker campaign. This Republican, who spoke candidly on condition of anonymity, said there’s still time for a course correction but that “if the election were today, he would not win.”…

Unresolved GOP primaries in Arizona and New Hampshire could also reshape the map. Trump-endorsed Blake Masters in Arizona is facing attacks over his past controversial comments dating back to college, including suggesting the U.S. should not have participated in World Wars I and II, and favorably quoting a noted antisemitic libertarian and a Nazi officer.

Masters, a Stanford University alumnus and protégé of libertarian tech magnate Peter Thiel, more recently doubled down on praise of the ideology of the “Unabomber” Ted Kaczynski. With Trump’s backing, Masters emerged as the frontrunner in the primary even as Sen. Mark Kelly (D-Ariz.) continues to haul in millions of dollars.