(CNN) - New poll numbers released show the so-called battleground states of the mid-term election are still battlegrounds.
According to new McClatchy-Marist poll numbers released Saturday, the races in Colorado, Pennsylvania, Washington and Wisconsin remain closely contested three days before Election Day.
In Colorado, Republican Tea Party-backed candidate Ken Buck leads Democrat Sen. Michael Bennet among likely voters, 49 percent to 45 percent.
In Pennsylvania, Republican Pat Toomey leads Democratic Rep. Joe Sestak among likely voters, 52 percent to 45 percent.
In Washington, incumbent Democratic Senator Patty Murray and Republican challenger Dino Rossi are neck and neck among likely voters, Murray with 49 percent and Rossi with 48 percent.
In Wisconsin, Republican Ron Johnson leads incumbent Democratic Sen. Russ Feingold 52 percent to 45 percent, among likely voters.
The polls have a sampling error of plus or minus 5 percentage points, which means the contests in these four states are dead heats.
–CNN Deputy Political Director Paul Steinhauser contributed to this report