Should the law be changed so the top two candidates in the primary election run against each other in the general election?

Under Wyoming election law, one can only vote in a Republican or Democrat primary. By changing the law, one could vote for the best candidates in either party. It would also give some more credence to 3rd party or independents. The downside would be longer and more tortuous election periods. I don't support the current 2 party system of government and this would be a step in the right direction. I was also surprised at the split in the voting, anyone care to explain why we should continue with the 2 party primaries?

ned
The only way I would be for this is if Wyoming allowed open primaries which would include all political parties not just Republicans or Democrats