This may turn into a battle of wit — and grit

WASHINGTON — Perhaps never have Americans been as familiar with both presidential nominees as they are with the two on the debate stage Monday night.

Neither Hillary Clinton nor Donald Trump needs to spend much time introducing themselves to voters. Instead, they will seek to use the forum to sharpen attacks, provoke and knock the other off balance.

The result could be a battle of psychology as much as policy.

“Anything is possible,” said Dr. Elizabeth Ossoff, chair of the psychology department at St. Anselm College in New Hampshire. “In the past, we might have been able to predict where the candidates were going to go in terms of their policy strengths. … But I also think they know what people have been responding to, and the moderator is going to go to some of these character issues as well.”

Here are hurdles Clinton and Trump must overcome to sway the electorate: Trump thrived in the freewheeling GOP primary debates, relying on his gift of