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Election Polls -- Accuracy Record in Midterm Congressional Elections

Gallup Poll Accuracy Record: Midterm Congressional Elections

Democrat

Republican

Other/
Undecided

Dem.
advan-
tage

%

%

%

%

2006

Nov 2-5

Likely voters

51.0

44.0

5.0

7.0

Actual

53.0

45.0

3.3

8.0

2-party vote

54.1

45.9

--

8.2


2002

Oct 31-Nov 3

Likely voters

45.0

51.0

4.0

-6.0

Actual

45.9

50.5

3.3

-4.6

2-party vote

47.6

52.4

--

-4.8


1998

Oct 29-Nov 1

Likely voters

49.0

45.0

6.0

4.0

Actual

47.8

48.4

3.8

-0.6

2-party vote

49.7

50.3

--

-0.6


1994

Nov 2-6

Likely voters

46.5

53.5

0.0

-7.0

Actual

45.5

52.4

2.1

-6.9

2-party vote

46.5

53.5

--

-7.0


1990

Oct 25-28

Likely voters

54.0

46.0

0.0

8.0

Actual

52.9

44.9

2.2

8.0

2-party vote

54.1

45.9

--

8.2


1986

Oct 24-27

Likely voters

--

--

--

--

Registered
voters

52.0

40.0

0.0

12.0

Actual

54.6

44.5

0.9

10.1

2-party vote

55.1

44.9

--

10.2


1982

Oct 15-18/
Sep 17-20

Likely voters

55.0

45.0

0.0

10.0

Final results based
on
combined studies

Actual

55.3

43.1

1.6

12.2

2-party vote

56.2

43.8

--

12.4


1978

Oct 27-30/
Oct 13-16

Likely voters

55.0

45.0

0.0

10.0

Final results based
on
combined studies

Actual

53.7

44.9

1.4

8.8

2-party vote

54.5

45.5

--

8.9


1974

Oct 18-21

Likely voters

60.0

40.0

0.0

20.0

Actual

57.6

40.6

1.8

17.0

2-party vote

58.7

41.3

--

17.3


1970

Oct 26-31

Likely Voters

53.0

47.0

0.0

6.0

Actual

53.4

45.1

1.5

8.3

2-party vote

54.2

45.8

--

8.4


1966

Oct 31-Nov 5

Likely voters

52.5

47.5

0.0

5.0

Actual

50.9

48.3

0.8

2.6

2-party vote

51.3

48.7

--

2.6


1962

Oct 29-Nov 2

Likely voters

55.5

45.5

0.0

10.0

Actual

52.5

47.2

0.3

5.3

2-party vote

52.7

47.3

--

5.3


1958

Oct 26-31

Likely voters

57.0

43.0

0.0

14.0

Actual

56.2

43.4

0.4

12.8

2-party vote

56.4

43.6

--

12.9


1954

Oct 26-30

Likely voters

51.5

48.5

0.0

3.0

Actual

52.5

47.0

0.5

5.5

2-party vote

52.8

47.2

--

5.5


1950

Oct 30-Nov 3

Likely voters

51.0

49.0

0.0

2.0

Actual

49.0

49.0

2.0

0.0

2-party vote

50.0

50.0

--

0.0


NOTE:

Likely voters refers to Gallup's final estimate

Actual refers to the final national results

2-party vote refers to the final national results, with Other/Undecided removed from the base

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