Tara Grubb is a candidate for U.S. Congress, North Carolina, District 6. (from her weblog).
I think its interesting to see a weblog from a candidate. I'm not familiar with the District 6 race in NC, so I don't know if Ms. Grubb is a viable candidate or not, but a weblog is a nice personable way to get the word out.
Now, a real weblog by a sitting politician is something else of interest. I'm not aware of any. Politicians, for good reason, take public positions very carefully and with much advice from people they trust.