One of the things that has been intriguing this primary season has been how the two remaining candidates have done among various demographic groups that make up the electorate in the various primaries and caucuses. CNN has been doing fairly extensive exit polls for the various state races. The one on Wisconsin shows that Obama won among Wisconsin voters of nearly every socio-economic background.
Obama won the male vote by 67% to 31% and drew even with Clinton among female voters.
Obama won 54% of the white vote and 91% of the African-American vote.
Obama won 52% of the non-college educated vote and 60% of the college educated vote.
Obama won 57% of those voters with an income less than $100,000 per year and 60% of those with an income over $100,000 per year.
The top three issues that voters listed were the economy, Iraq, and health care. Among voters listing each of those three as the "most important" issue, Obama got 57%, 60%, and 54% respectively.
Obama got 56% of those voters who were married and 58% of those voters who were not married.
Democratic, Republican, and independent voters all took Democratic primary ballots. The percentage of voters in each category was 62%, 9%, and 28% respectively. Obama's percentage with each of those three groups was as follows:
Among voters 18-64, Obama won 61% of the vote, but among voters 65 and older, Clinton won 58% of the vote.
Obama won 53% of voters who came from households with an union member and 59% of those who did not.
The above is not a complete list of the various demographic groups polled. The full list can be read at the link given above.