VCF0323 Salience (Likes-Dislikes): Major Parties

QUESTION:
---------
Major party salience

VALID_CODES:
------------
0.   Zero mentions
.
.
20.  Twenty mentions

MISSING_CODES:
--------------
99.  No Pre IW; form II (1972); form B (1986); form A
     (1990); questions not administered in assigned
     half-sample [See VCF012a] (1996)
Inap. question not used

NOTES:
------
GENERAL NOTE:
Party salience is the sum of all 'likes' and 'dislikes' about both
the Democratic and Republican parties:
[VCF0314 + VCF0315 + VCF0318 + VCF0319]
which is the same as:   VCF0317 + VCF0321

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

TYPE:
-----
Numeric  Dec 0

SOURCE_VARS:
------------
1952:  520018,520019,520020,520021  
1956:  560015,560016,560017,560018 
1958:  580015,580016,580017,580018
1960:  600020,600021,600022,600023  
1964:  640021,640022,640023,640024 
1968:  680028,680029,680030,680031
1972:  720031,720033,720035,720037
1976:  763088,763089,763090,763091,763092,763094,
       763095,763096,763097,763098,763100,763101,
       763102,763103,763104,763106,763107,763108,
       763109,763110
1978:  780091,780092,780093,780094,780095,780097,
       780098,780099,780100,780101,780103,780104,
       780105,780106,780107,780109,780110,780111,
       780112,780113
1980:  800173,800174,800175,800176,800177,800179,
       800180,800181,800182,800183,800185,800186,
       800187,800188,800189,800191,800192,800193,
       800194,800195
1982:  820074,820075,820078,820080,820081,820082,
       820083,820084,820086,820087,820088,820089,
       820090,820092,820093,820094,820095,820096
1984:  840267,840268,840269,840270,840271,840273,
       840274,840275,840276,840277,840279,840280,
       840281,840282,840283,840285,840286,840287,
       840288,840289
1986:  860073,860074,860075,860076,860077,860079,
       860080,860081,860082,860083,860085,860086,
       860087,860088,860089,860091,860092,860093,
       860094,860095
1988:  880183,880184,880185,880186,880187,880189,
       880190,880191,880192,880193,880195,880196,
       880197,880198,880199,880201,880202,880203,
       880204,880205
1990:  900074,900075,900076,900077,900078,900079,
       900081,900082,900083,900084,900085,900086,
       900087,900088,900089,900090,900091,
       900094,900095,900096,900097
1992:  923402,923403,923404,923405,923406,923408,
       923409,923410,923411,923412,923414,923415,
       923416,923417,923418,923420,923421,923422,
       923423,923424
1994:  940132,940133,940134,940135,940136,940138,
       940139,940140,940141,940142,940144,940145,
       940146,940147,940148,940150,940151,940152,
       940153,940154
1996:  960314,960315,960316,960317,960318,960319,
       960320,960321,960322,960323,960324,960326,
       960330,960332,960333,960334,960335,960336
2000:  000374,000375,000376,000377,000378,000380,
       000381,000382,000383,000384,000386,000387,
       000388,000389,000390,000392,000393,000394,
       000395,000396