Rick Perry has signed up 1,500 precinct leaders in Iowa, a source inside the campaign tells CNN. There are a total 1,774 Republican caucus precincts around the state, about 900 of which are combined.
Only Mitt Romney and Ron Paul have put in similar efforts to build a ground operation for the caucuses on Tuesday.
The Perry campaign also has 470 out-of-state volunteers descending on Iowa this weekend.
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