Republicans what Democrats have been found guilty of voter fraud & Democrats what Republicans have been found?

No matter who commits voter fraud they are the enemy of true representative government and I won't defend any of them regardless of party or political philosophy. I don't care if it's Obama's buddies at Acorn registering fictitious voters or Bush's buddies flipping the Diebold machine votes. There is no place for it and it's a very serious crime against our nation. I would rather have my candidates lose an honest election than win by voter fraud.