President Obama is calling in the big guns to close out his campaign ahead of the election on November 6. Katy Perry is performing in support of Obama once more at a Milwaukee, Wisconsin event Saturday, and on Monday, Jay-Z and Bruce Springsteen will perform at a rally attended by the president in Columbus, Ohio. Springsteen will travel with Obama to three campaign events in the Midwest on the eve of the election, starting in Madison, WI. Next they’ll head to Columbus where, according to The Hollywood Reporter, Springsteen and Jay will join on stage for a historic collaboration in the crucial swing state. However, Bruce’s site says Jay-Z will merely “follow” Springsteen on stage. Regardless, after that event, The Boss will continue along with the real boss to close out the final day of campaigning in Iowa.