Error in Table 4 of the codebook introduction: Stratum 21 should have SECU codes 11 and 29. Currently Table 4 shows Code 63 in both Stratum 21 and 29, but code 63 belongs only in Stratum 29.

Corrected version of the table:

                        TABLE 4

          1988 PRE- AND POST-ELECTION SURVEY
PAIRED SELECTION MODEL FOR SAMPLING ERROR COMPUTATIONS

       PAIR          (SECU)               (SECU)
      (STRATUM)      1 OF 2               2 OF 2
                     CODES                CODES
-----------------------------------------------------------

        1              103                 104
        2              105                 106
        3               99                 100
        4              101                 102
        5               95                  96
        6               97                  98
        7               93                  94
        8               91                  92
        9               89                  90
       10               83                  84
       11               81                  82
       12               77                  78
       13               75                  76
       14               73                  74
       15                2                   6
       16                7                   8
       17               14                  16
       18               17                  18
       19               19                  21
       20               24                  28
       21               11                  29
       22               30                  33
       23               37                  43
       24               40                  48
       25               42                  45
       26               50                  51
       27               52             36 + 55
       28               57                  64
       29               60             61 + 63
       30               67                  68