Madeline Halpert

Reporting from New York

Only one juror needs to believe he isn’t guilty for Trump to avoid a conviction.

A host of factors could disrupt the prosecutors’ case. For one, there is the credibility of Cohen, a key witness in the case who is also a convicted felon.

Prosecutors will also have to work hard to prove the links between Trump’s business records classification and a larger goal of influencing the 2016 election to jurors.

Members of a jury are often unpredictable, says Diane Kiesel, a former New York Supreme Court judge and Manhattan prosecutor.

“It only takes one person to decide that the [prosecutors] have not met their burden,” she says. “The [prosecutors] have 12 people to convince.”