An early poll of likely voters in next August’s Democratic primary for Governor shows more than 40 percent of them are undecided. And, of those who are decided, Claire McCaskill has 28 percent and Bob Holden has 26. That’s within the statistical margin of error for the survey. The survey has been done for the Kansas City Star and television station KMBC. Holden is four points ahead in St. Louis; McCaskill six points up on him in Kansas City; She leads among voters calling themselves conservatives almost two-to-one and is up by nine points among those earning more than $50,000 a year. Moderates and those earning less than $50,000 a year prefer Holden; Women like McCaskill; Men prefer Holden. Voters are evenly split, with few undecideds, on Holden’s demand for higher taxes for schools and social services.