Indiana and North Carolina Democratic Party Presidential Nomination Primaries on May 6th

As the voters head to the polls tomorrow in the Democratic party presidential primary contests in Indiana and North Carolina and express their preferences, it is my belief that Clinton will win the Indiana primary by about 6-8 points, and Obama will win the North Carolina primary by about 10-12 points. Here is why.

In Indiana, the African-Americans are likley to be about 10% of the electorate and the whites about 90% of the electorate. Among the African-Americans, Obama is likely to secure about 85% of the votes and Clinton about 10%. That gives Obama a net gain of about 8 points from the African-American votes. Among the whites, Clinton is likely to secure about 60% of the votes and Obama about 40% of the votes. That would give Clinton a net gain of about 20 points from the white votes. So Clinton has a net overall gain of about 12 points. However, making some adjustments for age and region in Indiana it is more likely that Clinton's net advantage is likely to be about 8 points.

Let us look at it from another perspective. In all the recently released (i.e., released in the last 2-3 days) public polls, Obama's preference numbers have been in the small range of low-to-mid 40s. However, Clinton's preference numbers have varied from as low as 42 to as high as 54 -- much higher variability. In a closer examintion of the preference numbers, it appears that when the undecideds are nudged and cajoed they prefer Clinton overwhelmingly. In any case, this has been the pattern in the earlier primaries.

Take Zogby's tracking poll released today. The stated preference numbers in Indiana are 42 for Clinton and 44 for Obama. If the undecides break 70-30 in favor of Clinton (not a very unreasonable assumption given the recent history), the undecideds would give Clinton a net gain of about 6 points placing her preference number about 52-53 and Obama's number at about 47-48.

In North Carolina, the African-American vote is likely to be about 35 percent of the electorate on Tuesday. Assuming about 70 perent net advantage in the African-American vote, the overall net gain for Obama from the African-American vote is about 24 points (70 percent of 35 percent.) Assuming about 20 percent net advantage for Clinton in the white votes, the overall net gain for Clinton from the white votes is about 13 points (20 percent of 65 percent.) So the total net gain for Obama is about 11 points (24 minus 13.) Most public polls put Obama's lead in North Carolina in the high-single digits or low double-digits.

We will obviously find out tomorrow night.

Update on Tuesday, May 6th: Based on the reports of large numbers of registered republicans voting in the Democratic primary (the republicans may be mischievous or genuinely engaged -- nobody knows for certain) in Indiana, the overall turnout numbers, and Zogby's final Indiana primary tracking poll including Zogby's report that Obama did well on Monday (47-41 in favor of Obama over Clinton), it is likely that Obama could come within striking distance (within five points) of Clinton's votes and/or may even squeak past her in today's Indiana primary.