ADDOBS enables you to add a district after the analysis
but before the results. For example, suppose you are doing an analysis of the
electoral college but have no explanatory variables for the District of
Columbia. You could then do an analysis for the 50 states with DC listed as
missing, but we also know that D.C. is heavily Democratic and has always given
a lopsided victory to the Democratic presidential candidate. In this case, we
could do: ADDOBS D.C. 0.8 120000 1 3;. This means that 0.8 fraction of
the vote goes to the Democrats, about 120,000 people will vote (assuming you
are using turnout as the weight), and the state will be won by the Democrats,
with 3 electoral college delegates.
Gary King
2006-01-07
