The February 12, 2008, primary is open to all registered voters, but each voter can only participate in either the Republican or the Democratic primary.
The Republican primary will produce a clear winner. Whoever receives the most votes statewide gets all 63 of the state's delegates to the GOP national convention.
The Democrats will allocate 83 of their 103 convention delegates on the basis of returns in the Tuesday primary. Fifty-four delegates will be apportioned to candidates roughly in proportion to the primary returns in each congressional district; another 29 will be apportioned based on statewide vote totals. To qualify for any delegates, a candidate must receive at least 15 percent of the vote. The other 20 delegates - mostly party leaders and elected officials - will be officially uncommitted and free to make their own choice.