We're a week closer to a potential upset in the special Massachusetts senate race (scheduled for voting tomorrow). The last 4 polling companies that have weighed in (according to Real Clear Politics data) come in at +10, +5, +10 and +3 Brown, and were all conducted since 1/14. These polls generally estimate a larger than normal turnout for a special election; only two candidates are on the ballot and there aren't any initiatives to vote on. They also suggest slightly positive ratings for President Obama among likely voters, although potentially under 50 percent.