The latest Mason-Dixon poll in Montana also included the Governor's race. Democratic incumbent (and netroots fave) Brian Scweitzer leads Roy Brown 55 to 30, exactly the same margin as in December's poll. You can find this and the other 4 Montana races polled (MT-Pres (D), MT-Pres, MT-Sen, MT-AL) as well as December's senate and gov. polls on Election Inspection's Montana page.