 Complete the following phrase:  Chicago has hosted the most United States presidential nominating conventions 14 Republican National Conventions and 11 Democratic National Conventions, in addition to one notable Progressive Party assembly. The 1860 Republican National Convention the second Republican National Convention was held at the Wigwam. The 1864 Democratic National Convention was hosted in a different Wigwam built for the convention as a semicircular roofed amphitheater. These were the first Chicago visits for each partys national convention. Baltimore has hosted 10 and Philadelphia has hosted 9. The 