American Research Group has the race at Obama/Clinton, 52/41. There has been virtually no change in these numbers since late March.
Obama leads among men 55% to 39% and he leads among women 50% to 43%.
Clinton leads among white voters 55% to 37% and Obama leads among African American voters 81% to 15%.
African Americans account for 34% of likely Democratic primary voters.
Obama leads 61% to 33% among likely primary voters under 50 and Clinton leads 50% to 43% among likely primary voters 50 and older.
More as it develops…