It airs at 9 p.m. on 6abc.
The time before the debate is an opportunity to cram on the facts, the data and the issues.
It's also a time to study one's opponent, look for weaknesses and to study one's own tendencies.
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Both Kamala Harris and Donald Trump are doing some or all of that this week.
Action News anchor Matt O'Donnell spoke to Republican strategist Farah Jimenez and Democratic strategist Neil Oxman about what both candidates need to do before the matchup.