Among likely voters Republican Gov. Scott Walker leads Democratic challenger Mary Burke 50% to 43% according to a new survey conducted by the Marquette University Law School.

This latest poll represents a huge change surveys done in the past indicating the race locked in a tie.

Walker’s gains were made among those voters who said they will be voting on Nov. 4. This group of voters is defined as “likely voters” in Marquette’s polling.

Marquette surveyed 1,164 likely voters from last Thursday through Sunday. The poll has a margin of error of plus or minus 3 percentage points.

The race is much tighter among all registered voters — with Walker leading Burke 46% to 45%.

This survey shows a tilt among independent voters towards Walker, thus voting group was evenly split between the two candidates in the past but now prefer Walker 52% to 37%.

This is Marquette’s last pre-election poll. Marquette’s previous survey, taken Oct. 9-12, showed Walker and Burke tied at 47% among likely voters.

Democrats have won the past two presidential races in Wisconsin but lost the last two races for governor, in part because of turnout.

Walker said, “The only poll I’m concerned about is the one on election day,” he said.

Burke’s campaign released a statement that says: “Today’s poll confirms what we’ve known for months — it’s too close to call and going to come down to turnout. In the final 6 days voters face a clear choice. A new direction with Mary Burke where everyone willing to put in the hard work gets a fair shot. Or to continue on the failed path Gov. Walker has us on — which puts those at the top and special interests before Wisconsin families…”