There are a couple of races that have been sitting in the Lean Democratic column because of Republican primaries that threaten to produce an unelectable candidate. While primaries remain a challenge for Republicans, the path to the GOP nomination for a number of the strongest Republican contenders is getting clearer, while the threat of another Richard Mourdock or Todd Akin has waned in a number of states As such, Sens. Mark Begich in Alaska, Mary Landrieu in Louisiana, and Kay Hagan in North Carolina are moving to the Toss Up column. In each of these races, polls show the races generally within the margin of error tied…. At this point it has become something of a D.C. parlor game to guess which of the four – Begich, Landrieu, Hagan or Pryor – is in the most trouble. At this point, it is pretty much splitting hairs. All four are locked into very close races, but none is dead.