The new Rasmussen poll of Arizona finds Sen. John McCain with only a small lead over his challenger in the Republican primary, former Rep. J.D. Hayworth.
The numbers: McCain 47%, Hayworth 42%, with a ±4% margin of error. The TPM Poll Average gives McCain a lead in the primary of 48.0%-40.8%, with the incumbent blow the crucial 50% mark.
From the pollster’s analysis: “McCain has been losing ground since January when he picked up 53% of the potential GOP Primary vote and Hayworth had only 31% support. Last month, the longtime senator and 2008 GOP presidential candidate earned 48% of the vote, while 41% of likely primary voters supported his challenger.”