Debate Day: Trump’s debate style is very unconventional but can be effective.

If you ask former President Donald Trump’s previous debate opponents what they’re watching for on tonight — and we did — many say the same thing: Look out for the thing he says or does that Harris can’t possibly prepare for.

Trump is the ultimate wild card who has found tremendous political success by ignoring the traditional rules of politics. He will say or do whatever he thinks is best in the moment. And Harris, who has dedicated several days to debate prep, can’t make a plan for everything.

At this point, it’s hard to imagine Trump surprising anyone with new material. He has praised dictators, talked about genitalia size, suggested suspending the U.S. Constitution and said that Harris only recently “turned Black.”

Trump’s own team doesn’t know what he’ll do or say on any given day. That’s incredibly risky for Trump. But it also puts enormous pressure on Harris.

So, the best thing to say is expect the unexpected from the former president.