But polls show that Harris' lead may now be declining. Pollster Nate Silver's forecast model showed Trump leading Harris in the Electoral College for the first time since the beginning of August on Friday. His model gave Trump a 52.4 percent chance of winning the Electoral College, which is about 5 points higher than Harris's 47.3 percent.
"Although we wouldn't advise worrying too much about the difference between a 52/48 race one way versus a 48/52 race the other way—it's not a big difference—this wasn't a good day for Kamala Harris in our model, as Donald Trump is the slight favorite for the first time since August 3," Silver wrote in an update.
His model also shows that the Republicans have made a net gain of between 0.2 and 2.1 points in every swing state other than Georgia in the past week.
He added that his model had accounted for any inflation in the polls owing to an expected boost for Harris following the Democratic National Convention.
