Oregon Senator Jeff Merkley will hold town hall meetings in Cascade Locks and Dufur on Sunday.  Merkley will be at the Dufur School cafeteria on Sunday at 1 p.m.  Then he moves on to the Cascade Locks Elementary School gym for another session at 4 p.m.  Merkley says he will update constituents on his work in Washington, D.C., answer questions and invite suggestions.