Poll results released recently by the lefty Web site Daily Kos give Sen. Susan Collins, R-Maine, a comfortable lead in her race against U.S. Rep. Tom Allen, D-Maine.

The interviews of 600 likely voters gave Collins a 57 percent to 38 percent lead. The phone survey took place Sept. 8 through Sept. 10. The margin for error is 4 percent.

On the campaign trail today, Collins continues her bus tour with stops in Pittsfield and Scarborough. Allen is scheduled to visit senior citizen centers in Portland and South Portland.