= ANES Time Series =

'''ANES time series studies''' are administered around each presidential election. They are all two-wave studies, corresponding to a ''pre-election'' interview and a ''post-election'' interview.

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== Weights ==

Declare the complex survey design like:

{{{
proc surveyfreq;
  stratum STRATUM;
  cluster CLUSTER;
  weight WEIGHT;
  table VOTE PARTY VOTE*PARTY ;
run;
}}}

Or:

{{{
svyset CLUSTER [pweight=WGT], strata(STRATUM) vce(linearize) singleunit(centered)
}}}

Until the 2006 pilot, clusters and strata were published as a single variable. This could be broken apart like:

{{{
compute STRATUM = trunc(v040103/10).
compute CLUSTER = v040103 ‐ (10*STRATUM)
}}}

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== Data ==



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