Jim Carreyas Democratic presidential nominee Joe Biden, who will make his debut on the season 46 premiere of this weekend.In the 18-second promo, released Thursday, Carrey is joined by alum Maya Rudolph, who will reprise her role as vice presidential nominee Kamala Harris, as they transform into the political figures.The teaser ends on the big reveal, showing Carrey and Rudolph looking ever the part and inhabiting Biden and Harris' personas. The pair pose with knowing looks as the spotlight