Which political era saw the longest period of republican domination

Politically the Republican dominated from 1861 to 1933. During this period that is 72 years only 16 years were ruled by Democrats which is four terms. To specify, the years of ruling by republican are Lincoln 1861-1865, Johnson 1865-1869, Grant 1869-1877, Hayes 1877-1881, Garfield 1881, Arthur 1881-1885, Harrison 1885-1889. This was continuous period and then there was McKinley 1897-1901, Roosevelt 1901-1909, Taft 1909-1913 and then again Harding 1921-1923, Coolidge 1923-1928, Hoover 1929-1933.

Ireally don't know