VCF0977 Does R Know If One House Candidate Was Already in the House

QUESTION:
---------
1958,1964,1966: 
Do you happen to know if (either/the) candidate is already in Congress?
1968:
Do you happen to know if (either one of these candidates/if he) is
already in Congress:
1978 AND LATER:  
Do you happen to know if [candidate in district where only 1 candidate 
ran] / either [first candidate in district where 2 candidates ran] or 
[second candidate in district where 2 candidates ran] was already in the 
U.S. House of Representatives before the election?

VALID_CODES:
------------
1.   Yes, candidate was/ one candidate was/ (some years:
     [see VCF0978]: both)
3.   No, candidate wasn't/neither candidate was
5.   DK

MISSING_CODES:
--------------
9.   NA; no major party candidate running; no Post
     IW; abbrev. telephone 1984); Washington D.C.; short
     form (1992)
Inap. question not used

NOTES:
------
1968 NOTE:
In 1968, 27 respondents were administered incorrect candidate names;
these casea are coded 9.
1996 NOTE:
For districts with 2 major party candidates, the order in which the 
Democratic and Republican House candidate names were read within the 
question text was randomized.
1998 NOTE:
same as 1996
2000 NOTE:
same as 1996

WEIGHT:
-------
VCF0009/VCF0009a

TYPE:
-----
Numeric  Dec 0

SOURCE_VARS:
------------
1958:  580097 
1964:  640312
1966:  660093 
1968:  680383
1978:  780180
1980:  800912 
1982:  820169
1984:  840929,840932 
1986:  860213,860216
1988:  880708,880711 
1990:  900231,900234
1992:  925435,925438 
1994:  940431,940434
1996:  961068,961070 
1998:  980299,980301
2000:  001353a,001354