Public Policy Polling’s first poll on the Republican primary race for Senate in Kentucky shows Rand Paul leading Secretary of State Trey Grayson 44 percent to 25 percent. Paul leads Grayson 54 percent to 22 percent among voters who are unhappy with congressional Republicans and 54 percent to 18 percent among those who think the GOP has gotten too liberal. But he also leads 40 percent to 25 percent among those who are happy with the congressional Republicans’ performance in office and 38 percent to 28 percent among those who are “comfortable with where their party is ideologically.” One caveat is that neither candidate is that well known, so the race could become very fluid as they try to define each other. Here are the full results (pdf).

UPDATE: The same polling outfit finds both Paul and Grayson leading the two main declared Democratic candidates in the general election.