Polls show a very tight race ( rise) in Indiana, and that sinator Obama is comfortable two digit lead(ing) in the polls in North Carplina has dwindled (win) down to single digits.

• 民意测验显示了印第安纳州的紧张竞赛，而且参议员奥巴马在北卡罗莱纳州竞选中的优势已经从两位数下降到一位数。