Senators running for President

The following U.S. Senators have frequently been mentioned as possible candidates for President in 2008: George Allen (R-VA), Evan Bayh (D-IN), Joseph Biden (D-DE), Hillary Clinton (D-NY), Russell Feingold (D-WI), Bill Frist (R-TN), Chuck Hagel (R-NE), John Kerry (D-MA), Joseph Lieberman (D-CT), John McCain (R-AZ), Barack Obama (D-IL), Harry Reid (D-NV), Rick Santorum (R-PA). If they all run, will the Senate ever be able to muster a quorum in 2007-08?