Big fan of election and demographic numbers since 2006
 

1966 United States Congressional Elections – Colorado

United States Senate – GOP Hold

Gordon L. Allott (R-inc) – 368,30758.02%

Roy Romer (D) – 266,19841.93%

Walter Cranson (W/I) – 3320.05%

Total Votes – 634,837100.00%

United States House of Representatives – District 1 – DEM Hold

Byron G. Rogers (D-inc) – 92,68856.03%

Greg Pearson (R) – 72,73243.97%

Total Votes – 165,420100.00%

United States House of Representatives – District 2 – GOP Gain

Donald G. Brotzman (R) – 95,12351.68%

Roy H. McVicker (D-inc) – 86,68547.09%

Joe Lucero (New Hispano) – 2,2631.23%

Total Votes – 184,071100.00%

United States House of Representatives – District 3 – DEM Hold

Frank E. Evans (D-inc) – 76,27051.71%

David W. Enoch (R) – 71,21348.29%

Total Votes – 147,483100.00%

United States House of Representatives – District 4 – DEM Hold

Wayne N. Aspinall (D-inc) – 84,10758.61%

James P. Johnson (R) – 59,40441.39%

Total Votes – 143,511100.00%

Source: Office of the Clerk of the United States House of Representatives