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INR!

This operator can be used to work on an incumbency variable -- usually coded as $ -1$ for Republican Incumbents, 0 for open seats, and 1 for Democratic incumbents -- to produce a variable which has the values $ -1$ for Republican incumbents and 0 otherwise. This is useful for commands such as PROB that will give the expected proportion of Republican incumbents likely to win reelection.



Gary King 2006-01-07