Not only do individuals differ with their peers, they often fail to agree with themselves.

一个人的决策不仅常与同伴不同，而且常常无法与自己达成一致。

In this case, Guinevere is saying that it's difficult to try to convince Lance that he's wrong because he has this set of reasons that don't seem to allow for anyone to differ with him.

在这种情况下，Guinevere 是说很难说服 Lance 他错了， 因为他有这些似乎不允许任何人与他不同的理由。

And so, despite her efforts to distance herself from President Obama, this does - it's hard for her to totally argue that she's not a Democrat, even though she differs with the president on this issue.

因此，尽管她努力与奥巴马总统保持距离，但这确实 - 她很难完全辩称她不是民主党人，即使她在这个问题上与总统存在分歧。