Unfortunately, this event never occurred due to an accident that happened onstage at a My Morning Jacket show the night before in Iowa City.
These posters were already printed, so the venue sent some (was told 80 of the 100) of these to Jim to sign, as the initial sales still went towards Obama's campaign. After the election, a few were left and the sales of those benefited the Chicago Youth Symphony Orchestra, who MMJ had played with on previous visits to Chicago.
Their are some unsigned prints still available on Schubas website.