Ok... so are Democrats racists?

Amy Goldstein of the Washington Post reports on the actual behavior of Democrat voters:

Yesterday's primary voting laid bare a profound racial and ethnic divide among Democratic voters, with African Americans overwhelmingly preferring Sen. Barack Obama and Latinos largely favoring Sen. Hillary Clinton. [....]

The divergent choices by minority voters reflect broad issues of loyalty and identity, observers said, rather than specific differences in the candidates' stances on issues. "There is so little distance between the policies, it comes down to personality, style and name recognition," said Arturo Vargas, executive director of the National Association of Latino Elected and Appointed Officials, based in Los Angeles.

"No one has said, 'This is the black Democratic agenda, the Latino Democratic agenda,' " Vargas said. "This is just, who do people know, who do they identify with, who are they comfortable with?"

What is the difference between favoring one candidate on racial  or ethnic grounds (and disfavoring the other on the same grounds) and prejudice?
Amy Goldstein of the Washington Post reports on the actual behavior of Democrat voters:

Yesterday's primary voting laid bare a profound racial and ethnic divide among Democratic voters, with African Americans overwhelmingly preferring Sen. Barack Obama and Latinos largely favoring Sen. Hillary Clinton. [....]

The divergent choices by minority voters reflect broad issues of loyalty and identity, observers said, rather than specific differences in the candidates' stances on issues. "There is so little distance between the policies, it comes down to personality, style and name recognition," said Arturo Vargas, executive director of the National Association of Latino Elected and Appointed Officials, based in Los Angeles.

"No one has said, 'This is the black Democratic agenda, the Latino Democratic agenda,' " Vargas said. "This is just, who do people know, who do they identify with, who are they comfortable with?"

What is the difference between favoring one candidate on racial  or ethnic grounds (and disfavoring the other on the same grounds) and prejudice?