While hestitating to handicap the North Carolina and Indiana primaries (the links are to RealClearPolitics poll summaries, which do not indicate any clear trend), I will say that Democrats in those states have a lot to ponder.
In addition to the controversy surrounding Rev. Jeremiah Wright, Sen. Barack Obama has been plagued by his association with former Weather Underground terrorist Bill Ayers. That connection roiled the blogosphere today when John Ruberry of Marathon Pundit found an online version of a 2001 Chicago magazine article about Ayers, featuring a color photo of Ayers stepping on an American flag.
Even Democrats who like Obama may be wondering whether these associations will doom the Democrats in November. They have to ask themselves, "What will Karl Rove do?"