Districts with Split Results in Presidential and House Elections,

Districts with Split Results in Presidential and House Elections,
1920-1994«

		Districts with	Split Results
Year	Districts	Number	Percentage
1920	344	11	3.2
1924	356	42	11.8
1928	359	68	18.9
1932	355	50	14.1
1936	361	51	14.1
1940	362	53	14.6
1944	367	41	11.2
1948	422	90	21.3
1952	435	84	19.3
1956	435	130	29.9
1960	437	114	26.1
1964	435	145	33.3
1968	435	139	32.0
1972	435	192	44.1
1976	435	124	28.5
1981	435	143	32.8
1984	435	196	45.0
1988	435	148	34.0
1992	435	109	23.7

Gary Jacobson, The Politics of Congressional Elections, Longman 1997, p. 130