“…Aldrich (1980a, b) and Bartels (1985Bartels ( , 1988 demonstrate the virtue of campaign momentum from performing better than expected. 4 Recent models of presidential nomination outcomes possess one of numerous measures of momentum THE NEW HAMPSHIRE EFFECT IN PRESIDENTIAL NOMINATIONS 377 such as success in initial primaries (Adkins and Dowdle, 2001a;2001b;Norrander, 2000), performance in previous primaries (Grush, 1980;Norrander 2000a, b;Mutz 1995;Hinckley and Green 1996;Damore 1997;Haynes, Gurian, and Nichols 1997), or media coverage (Gurian 1986(Gurian , 1990(Gurian , 1993aGurian and Haynes 1993). Measuring candidates' support at the end of the exhibition season, however, misses the effect of such movement.…”