PROVIDENCE — Democratic U.S. Senate challenger Sheldon Whitehouse and incumbent Governor Carcieri have double-digit leads over their opponents in a poll released yesterday by Rhode Island College’s Bureau of Government Research and Services.

The survey of 408 registered voters conducted Oct. 23 through Oct. 25 also found that casino opponents continue to outnumber supporters by a wide margin, despite more than $8 million spent by Harrah’s Entertainment to promote the measure.

With the election just 11 days away, Whitehouse leads Republican incumbent U.S. Sen. Lincoln Chafee by 10 points – 43 percent to 33 percent, with 24 percent undecided. In a RIC poll released about two weeks ago, Whitehouse’s lead was just 3 percent in the race that has garnered national attention for its potential to shift the balance of power in the U.S. Senate.

Carcieri leads his Democratic challenger, Lt. Gov. Charles Fogarty, 49 percent to 35 percent with 16 percent undecided.

And 55 percent of voters oppose the proposal to amend the state Constitution to bring a Narragansett Indian casino to West Warwick, while 36 support it. Another 8 percent are undecided.

The survey has a margin of error of 5 percent.