03/29/2010 05:12 am ET Updated May 25, 2011

Poll: McKenna Leads, GOP Governor's Race Still Tight

A new Rasmussen survey, released Wednesday, gives Andy McKenna a slight edge in the Republican primary for governor, though the race is still very much up in the air.

McKenna got support from 20% of the 527 likely Republican voters polled, with Jim Ryan coming in second at 16% and Kirk Dillard at 13%.

With the margin of error in the poll at +/- 4.5%, however, McKenna and Ryan are essentially tied, with Dillard not far behind.

The poll paints a quite different picture from Tuesday's numbers released by Public Policy Polling. In that poll, it was Kirk Dillard at 19%, with McKenna and Bill Brady within the margin of error. Jim Ryan polled at only 13% in that survey; Brady polled at a paltry 11% in Wednesday's Rasmussen poll, leading only Dan Proft.

In any event, the most movement seems to be for Ryan and McKenna, in opposite directions. Ryan was once the frontrunner in the race, polling at 26% in December. McKenna only polled at 12% in that survey.

No recent poll has shown a clear leader in the race, though, and with 17% of respondents listed as "not sure" in Wednesday's Rasmussen tally, this race may be too close to call for some time yet.