Sen. John Ensign's (R-Nev.) numbers have continued to fall over the last month.

Rep. Mark KirkMark KirkGiffords, Scalise highlight party differences on guns Stale, misguided, divisive: minimum wage can't win elections Immigration critics find their champion in Trump MORE (R-Ill.) is set to make an announcement today about a candidacy for statewide office. That office is expected to be Senate.

Kirk would have a retired judge for a primary opponent.

Sen. Chris Dodd (D-Conn.) attends an ill-timed event with lobbyists.

Sen. Tom CoburnTom Coburn-trillion debt puts US fiscal house on very shaky ground Al Franken: 'I make fun of the people who deserved it' The more complex the tax code, the more the wealthy benefit MORE (R-Okla.) reminds us that he can really raise money when he puts his mind to it.

A political blog reports state Sen. Darrel Aubertine (D) will run in the special election to replace Rep. John McHugh (R-N.Y.). It would be a big get for congressional Democrats.