Independent gubernatorial candidate Tom Tancredo has now moved to within four points of Democrat John Hickenlooper to turn the Colorado governor's race into a toss-up, according to Rasmussen Reports.The latest Rasmussen telephone survey of likely voters in Colorado finds Hickenlooper with 42 percent support, while Tancredo, the candidate of the American Constitution Party, earns 38 percent of the vote. Support for Republican Dan Maes continues to fall and now stands at 12 percent. Two percent prefer some other candidate, and six percent are undecided.Less than two weeks ago, Tancredo earned 35 percent of the vote to Hickenloopers 43 percent and Maes 16 percent. That shifted the race from "Solid Democrat" to "Leans Democrat" in the Rasmussen Reports Election 2010 Gubernatorial Scorecard. Now the race moves to a "Toss-Up."Tancredo, a former GOP congressman best known for his views on immigration, entered the race after Maes won the state Republican Primary. He argued that Maes, who has been abandoned by many of the states high-level Republicans, could not win the general election contest.Tancredos support has risen from 14 percent in late August, while Maes support has dropped from a high of 31 percent just after his primary win earlier that month. In that same period, Hickenloopers support has generally held steady in the low to mid 40s.The survey of 750 likely voters in Colorado was conducted on Oct. 14, by Rasmussen Reports. The margin of sampling error is plus or minus 4 percentage points with a 95 percent level of confidence, according to Rasmussen.