 In 1986, he switched to the Republican Party, and ran as a Republican in the mayoral elections of 1987 and 1991.Limits vary from city to city even within the same state.For example, Houston, Texas, has a limit of 2 four-year terms (prior to November 3, 2015, 3 two-year terms dating back to 1991), while San Antonio, Texas, has a limit of 4 two-year terms.