mugwump

mugwump \MUHG-wuhmp\ , noun;
1. A person who is unable to make up his or her mind on an issue, esp. in politics; a person who is neutral on a controversial issue.
2. A Republican who refused to support the party nominee, James G. Blaine, in the presidential campaign of 1884.

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I often use these Words of the Day in a self-deprecating and "humorous" manner to describe myself, but this one certainly doesn't fit me.