How will the news media handle the battle between Hillary Clinton and Donald Trump? I suspect I know the answer — and it’s going to be deeply frustrating. But maybe, just maybe, flagging some common journalistic sins in advance can limit the damage. So let’s talk about what can and probably will go wrong in coverage — but doesn’t have to.

First, and least harmful, will be the urge to make the election seem closer than it is, if only because a close race makes a better story. You can already see this tendency in suggestions that the startling outcome of the fight for the Republican nomination somehow means that polls and other conventional indicators of electoral strength are meaningless.

The truth, however, is that polls have been pretty good indicators all along. Pundits who dismissed the chances of a Trump nomination did so despite, not because of, the polls, which have been showing a large Trump lead for more than eight months.

Oh, and let’s not make too much of any one poll. When many polls are taken, there are bound to be a few outliers, both because of random sampling error and the biases that can creep into survey design. If the average of recent polls shows a strong lead for one candidate — as it does right now for Mrs. Clinton — any individual poll that disagrees with that average should be taken with large helpings of salt.