I made an error in a diary last Sunday, "Center Right Nation? Survey Says: Not So Much". I got the total House and Senate popular vote percentages switched. The House GOP total did go over 50% that year. So I wanted to set the record straight with overviews of both chambers. First, since I didn't do this before, here's the Senate:
There were 34 elections during this time.
# of Elections won popular vote:
Dems: 28
Reps: 6
# of Elections over 50%:
Dems: 22
Reps: 2
# of Consecutive elections won popular vote:
Dems: 10
Reps: 1
# of Consecutive Elections over 50%:
Dems: 7
Reps: 1
If these were sports teams, would there be any doubt which one was the dominant power?
And, since the Senate only turns over 1/3 of the seats each election, it makes sense to look at rolling 3-cycle averages, as well:
There were 32 3-election cycles during this time.
# of Cycles won popular vote:
Dems: 30
Reps: 2
# of Cycles over 50%:
Dems: 23
Reps: 0
# of consecutive cycles won popular vote:
Dems: 26
Reps: 1
# of consecutive Cycles over 50%:
Dems: 12
Reps: 0
# of Cycles won popular vote by 5%+:
Dems: 16
Reps: 0
And, finally, here's the corrected House chart:
There were 34 elections during this time.
# of Elections won popular vote:
Dems: 26
Reps: 8
# of Elections over 50%:
Dems: 23
Reps: 3
# of Consecutive elections won popular vote:
Dems: 20
Reps: 4
# of Consecutive Elections over 50%:
Dems: 19
Reps: 1
# of elections won popular vote by 10%+:
Dems: 5
Reps: 0
# of elections won popular vote by 5%+:
Dems: 18
Reps: 2
Summary
In light of all the above, the only possible sense in which one can say that "America is a center-right nation" is (A) to ignore the legislative branch entirely, or (B) to only look at the period 1994-2004 in the House. During this same period of time, the Senate was, at best, evenly balanced. And the last two cycles clearly indicate that both chambers are returning to the customary pattern of Democratic dominance, with demographic pattern spreading across the country that strongly indicate decades more of the same.
Tables
House Popular Vote
Year
Dems
Reps
1942
46.1%
50.6%
1944
50.6%
47.2%
1946
44.3%
53.5%
1948
51.2%
45.4%
1950
48.9%
48.9%
1952
49.2%
49.3%
1954
52.1%
47.0%
1956
50.7%
48.7%
1958
55.5%
43.6%
1960
54.3%
44.8%
1962
52.1%
47.1%
1964
56.9%
42.4%
1966
50.5%
48.0%
1968
50.0%
48.2%
1970
53.0%
44.5%
1972
51.7%
46.4%
1974
57.1%
40.5%
1976
55.5%
44.7%
1978
53.4%
44.7%
1980
50.3%
47.6%
1982
54.1%
43.4%
1984
51.9%
46.8%
1986
50.1%
47.6%
1988
53.2%
45.3%
1990
52.0%
43.9%
1992
49.9%
44.8%
1994
44.7%
51.5%
1996
48.1%
47.8%
1998
47.1%
48.0%
2000
47.0%
47.3%
2002
45.0%
49.6%
2004
46.6%
49.2%
2006
52.0%
44.1%
2008
53.0%
44.2%
Senate Popular Vote
Year
Dems
Reps
1942
46.7%
49.2%
1944
50.3%
46.1%
1946
54.5%
41.4%
1948
56.2%
42.6%
1950
47.2%
49.9%
1952
51.9%
44.7%
1954
55.5%
43.0%
1956
50.6%
48.5%
1958
55.0%
43.2%
1960
55.1%
44.2%
1962
50.4%
49.0%
1964
56.3%
42.2%
1966
47.9%
51.0%
1968
49.3%
46.5%
1970
52.4%
39.9%
1972
45.5%
52.4%
1974
55.2%
44.5%
1976
53.7%
41.5%
1978
50.6%
47.6%
1980
50.3%
47.6%
1982
54.1%
43.4%
1984
49.8%
49.3%
1986
50.1%
47.6%
1988
52.1%
46.2%
1990
51.1%
47.1%
1992
49.2%
44.4%
1994
44.0%
49.9%
1996
49.4%
47.9%
1998
49.5%
46.8%
2000
48.4%
47.7%
2002
45.5%
49.5%
2004
50.8%
45.3%
2006
53.2%
41.8%
2008
51.3%
45.4%
Senate Popular Vote Rolling 3-Cycle Avg. (Unwieghted)