If the Senate stays red, Republicans will have one man to thank: Anthony Weiner. More than half a million emails discovered on the disgraced New York Democrat’s laptop prompted the FBI to reopen their investigation of Hillary Clinton and dramatically shifted the election’s narrative.

While it’s unlikely the investigation will keep Clinton from taking the White House, the news is already affecting Democrat prospects down ballot. For Senate Republicans struggling to keep their seats, Weiner has offered a last-minute lifeline and supplied new political ammunition.