That’s where continual contact comes into play. One of the biggest complaints I hear from blacks, for example, is that GOP leaders don’t take time to talk to them That is why it was so noteworthy that Mitt Romney would dare go deep into enemy territory and actually have a conservation with them.
That is not to say that you will win even a significant minority vote by doing this, but the willingness to do this will win votes.
Look to CA for clues. Growing Hispanic population has lead to clashes with the poor black community. Blacks on the street in CA gets it. Illegal immigrants means less jobs for them and growing Hispanic population means less power for them in the cities. Recently a Hispanic lead coalition want to repeal CA consitution admendmnent against using race as criteria for college admissions. Asian state senators killed that move because they do not want their kids thrown out of low cost CA universities. Question for GOP is are they astute enough to take advantage of the fissures in the Dem coalition. The last big kicker is as the Arab American population grows in US many join Dem party. Many Arab Americans are anti Jewish and anit Israel. Last convention the Dem delegates had to do a voice vote to add a pro Israel admendment to their party platform. Even by voice vote is failed but the chair at the podium decided it passed to avoid offending their Jewish wing. But the conflict will not go away. Arab Dems are going to press the issue because they simply hate Jews and Israel. Arab American population is growing faster then Jewish American population. It is going to be interesting when it comes to the Dem Jews. Break out the pop corn. Like Pat Buchanan says, demographics is destiny.