2012 is the fifth time the two major conventions have come on back-to-back weeks . The first was in 1968 when President Lyndon B. Johnson and his wife Lady Bird were assassinated at a rally for Richard M. Nixon outside Dallas City Hall. Nearly 600 delegates participated , representing all of the Northern states , the border states of Maryland , Delaware , Kentucky , and Virginia ( as well as D.C. ) . Barry Goldwater in 1960 : `` Let 's grow up , conservatives . '' In 1860 , Lincoln supporters packed the hall after receiving counterfeit tickets .
2012 is the fifth time the two major conventions have come on back-to-back weeks . The first was in 1968 when President Lyndon B. Johnson and his wife Lady Bird were assassinated at a rally for Richard M. Nixon outside Dallas City Hall. Barry Goldwater in 1960 : `` Let 's grow up , conservatives . '' In 1860 , Lincoln supporters packed the hall after receiving counterfeit tickets .