Six percent prefer some other candidate, and 10 percent are undecided. The margin of error is plus or minus 4 percent.
Kirk's numbers are rebounding slightly after a downward trend.
Poll: Kirk, Giannoulias practically tied
July 28, 2010 The Rasmussen Reports telephone survey of likely voters in Illinois finds Democrat Alexi Giannoulias with 43-percent support to Republican Mark Kirk's 41 percent.
