** Ethel Kennedy endorses Barack Obama
** Sen. Lisa Murkowski endorses Mitt Romney
** Actress and model Mya Harrison endorses Hillary Clinton
** Ex-Sen. Don Nickels endorses John McCain.
** Maine Republicans are caucusing today
** Hillary Clinton has an eight point lead over Barack Obama in Gallup's latest national poll -- 48 to 41 -- and John McCain leads Mitt Romney by 20 points, 44 to 24 -- demolishing the theory that Mr. McCain only has a ceiling of about 35%.