Sen. Jeff Merkley (D-Ore.) has signed on to Sen. Mary Landrieu's (D-La.) bill that seeks to allow people whose insurance plans have been canceled to keep them, becoming the sixth Democratic senator to back the effort.

Merkley has signed on as a co-sponsor, joining Landrieu and Sens. Dianne Feinstein (D-Calif.), Kay Hagan (D-N.C.), Mark Pryor (D-Ark.) and Joe Manchin (D-W.Va.).