From NBC News:
Louis DeSipio, a professor of Political Science and Chicano Studies at the University of California Irvine … wrote a popular book on Latino attitudes stemming from the lack of academic attention to Latino voters. … His book, Counting the Latino Vote, was published in 1996 and is a must-read for any scholar of Latino politics who wants to trace the lineage of this controversy over Latino political attitudes.
 
For the full story, please visit http://www.nbcnews.com/news/latino/opinion-polling-latinos-has-always-been-controversial-n524361