Dave Leip's Atlas of U.S. Presidential Elections

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2010	Democratic	339,272	33.4%
	Republican	675,515	66.6%

2006	Democratic	542,347	59.3%
	Republican	371,961	40.7%

1994	Democratic	500,061	51.7%
	Republican	466,604	48.3%

1990	Democratic	415,864	47.5%
	Republican	459,995	52.5%

1986	Democratic	519,855	59.9%
	Republican	347,897	40.1%

1978	Democratic	430,796	61.6%
	Republican	268,472	38.4%