What to watch for in the first Trump-Biden debate

When President Trump and Joe Biden meet on stage in Cleveland,on Tuesday night, they arrive as two well-known entities. Mr. Trump, the incumbent president who shares his opinions on Twitter every day and in almost daily media appearances, and Biden, the Democratic nominee who has been in public life for decades.

But Tuesday marks the first time they will tangle face-to-face as the nation watches. That first debate will answer a number of questions, and set the tone for the next two, even as Americans have already begun casting...