John Sides at The Monkey Cage channels Brian Arbour on early voting trends in Texas:
I measured the turnout increase from 2004 against demographic characteristics that have differentiated the two Democratic candidates to this point—% Hispanic, Black, Bachelor Degree, and Median Income. The numbers below measure the number of voters through February 25, 2008 (7 days of early voting) to those of February 29, 2004 (also 7 days of early voting). Early voting numbers show that turnout is up strongly in counties that have demographic characteristics that favor Barack Obama. Turnout is up only modestly in counties whose demographics favor Hillary Clinton.
-- Robert Farley