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

Rep. Mark KirkMark KirkGOP senator defends funding Planned Parenthood Why Qatar Is a problem for Washington Taking the easy layup: Why brain cancer patients depend on it 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'Path of least resistance' problematic for Congress Freedom Caucus saved Paul Ryan's job: GOP has promises to keep Don't be fooled: Carper and Norton don't fight for DC 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.