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Uncontested Districts

JUDGEIT includes several routines to deal with uncontested districts. By default JUDGEIT assumes that a vote proportion below 0.05 or above 0.95 indicates an uncontested district and are fixed to default alternate values; these levels can be changes using the options uncontested.low and uncontested.high.

The option uncontesteds.method indicates which method is to be used to deal with districts tagged as uncontested:

• "default", which replaces uncontested values with assumed vote totals specified by uncontested.low.new and uncontested.high.new (default values are 25% and 75%);

• "impute", which uses the behaviour of contested districts to estimate unknown vote shares,

• "remove", which simply eliminates uncontested districts from the analysis, or

• "nochange" which leaves the vote variable as entered.