Ron Christie is a Republican political strategist, who also worked as a member of former Vice-President Dick Cheney’s staff.
He tells BBC News that both campaigns should have set out their visions more clearly and politely.
“In these troubling times, the American people are looking for a bit more civility from their elected or soon to be elected officials.”
Both campaigns need to “take a step back, go back home, and reflect,” he says.
“They did a disservice to the American people,” he said.
Tonight’s debate made 69% of voters feel annoyed, and 19% feel pessimistic. On a more positive note: 31% were entertained and 17% say they were informed.