The voters decided by a landslide that their favorite 1930s performance by Katharine Hepburn is 1938's Bringing Up Baby, easily beating out second-place Holiday (my personal favorite) by twenty-four votes. Of the 83 votes cast:
Bringing Up Baby43 (51%)
Holiday 19 (22%) Stage Door 10 (12%) Little Women 4 (4%) Alice Adams 3 (3%) Morning Glory 2 (2%) Sylvia Scarlett 2 (2%)
It's not surprising that Kate's role as madcap heiress Susan Vance won so easily. It's Hepburn's definitive comic performance. Her mastery of Howard Hawks' rapidfire dialogue is hilarious and yet it's not nearly as rat-a-tat-tat as the director's His Girl Friday, which would follow this film two years later and is, for my money, The Mother of All Rapidfire-Dialogue Movies.
What was surprising was the lack of support for Alice Adams, one of Hepburn's greatest performances no matter which decade, and Morning Glory, her first Oscar winning turn.