With the midterms closing in, a new poll from the New York Times and Sienna College delivers troubling news for Democrats: Worries about the economy are giving Republicans a renewed edge. The big takeaway stat is that likely voters would prefer a Republican to represent them in Congress over a Democrat by a 49-45 margin, a flip from September when Democrats (boosted by concerns over abortion rights) were up by a single point. The stats with independent voters explain the turnaround: