The young black senator is better at appealing to the centrist voters who like Mr McCain; and the prospect of another Clinton co-presidency would do much to compel Republican right-wingers to get behind a man they think is not a true conservative.

• 这位年轻的黑人参议员更善于获得从麦凯恩手中争取到中间派选民的支持；而且克林顿夫妇联合执政的前景也会迫使右翼共和党人团结一致，支持那位原本在他们心目中算不上是真正的保守派的候选人。