A Lutheran holding to double-predestination, as others have noted, would be completely out of sync with five hundred years of Lutheran theology and would be rather appropriately called a crypto-Calvinist. The doctrine of the Cross is that our Lord suffered for the sins of the whole world, not only for the elect, and that by His death all might be saved; though there will be those who will refuse and reject this Gospel to their own destruction. Universal atonement, not limited atonement. Christ's blood doesn't cover only some sins, or only the sins of some people, it covers all sins--each and every last sin ever. And it is the will of God that all--yes, all--be saved.
Election isn't about God's sovereign right to save some and damn others as He so pleases, it is about the bountiful mercy of God toward sinners in Christ, and that in Christ we have true and assured hope of our salvation by the total efficacy of what He has done for us and the whole world.
Where this conflicts with reason, we confess the paradox and submit that God has not seen to make known everything to us, but only that which is necessary for salvation, and to therefore trust on His sure and certain word and promises: That He who suffered death on Calvary's cross is indeed the Savior of all men, and that in Him we have been chosen and can therefore, in confidence, confess that by the death and resurrection of the Savior we are indeed truly saved; not on account of our deeds or merits, but by the tender and great mercies of God. God will save the world because God loves the world, He is stubborn and ferocious in His kindness.
-CryptoLutheran