Yes. Unbiased != more accurate. If, for example, there is a poll you KNOW is doing something wrong, you should down-weight it. A pure polling average there wou

Yes. Unbiased != more accurate. If, for example, there is a poll you KNOW is doing something wrong, you should down-weight it. A pure polling average there would be wrong. However, once you start weighting polls, people start criticizing the way you do it.