There isn't a "chorus" behind Donald Trump's debate performance, and that could have reverberations on the GOP's congressional races, experts told CNBC's "Squawk Alley" on Thursday.
Trump was doing "fairly well" in a focus group with undecided voters until a few key moments of the debate, said Chris Kofinis, CEO of Park Street Strategies, a public relations and research firm. He said that Trump's remark that Clinton was a "nasty woman," and his comments about accepting the outcome of the election, represent a "blown opportunity" for the Republican nominee.
"People kind of turned on him," said Kofinis, who previously worked for a Democrat, Sen. Joe Manchin. "It really kind of speaks to the larger problem that Trump has had with his entire campaign. He keeps blaming everyone else for his faults, for the flaws."