A couple of new polls out show Barack Obama's once considerable lead in North Carolina melting away.One poll even has Clinton ahead 44%-42% with 14% undecided. While probably not an accurate assessment of the race it still shows Obama in a bit of trouble. For instance, as Captain Ed points out, the demographics in this poll from Insider Advantage are killing Obama:The biggest movement, according to pollster Matt Towery, comes from white voters over 45, but that's hardly Obama's only problem. He only commands majorities among 18-29 and 30-44 age groups, the former of which has a habit of not showing up at the voting booth. He doesn't poll above 36% in the remaining age groups, which have heavily comprised Democratic turnout of late.His normal support among African-American voters appears to have eroded as well. Obama only captures 64% of it in this poll of likely voters, while Hillary gets 20%. That's a lot better than her 92-8 drubbing among black voters in Pennsylvania, and it...(Read Full Post)