Highly unlikely it would have worked. IMO Long would have been been strongly compelled to run at the head of the 3rd party ticket in the 1936 presidential election and he probably would have picked congressman Lembke as his Veep. However his campaign would have tainted by his association with extremists Gerald Smith and Fr. Coughlin; FDR would have made sure of that. At any rate FDR was going to be reelected, that was a sure thing. Long would have ended hurting Alf Landon's presidential bid than FDR's reeclection bid. The irony of that election would have been Huey Long's party would probably have carried slightly more states(I'm thinking Louisana, Arkansas, and Mississippi) and more electoral votes than the Republicans. I believe Long would try again for the presidency in 1940 this time going for the Democratic nomination on a isolationist and no third term platform. He may do better than John Garner did in OTL but he still would not be able to take the nomoination away from FDR. Huey,along with his brother Earl, will have virtual dominance of the political life of Louisana until the early 1960's. Considering the fact that Earl Long was able to come back as governor more than once and Edwin Edwards did the same years later, it is highly conceivable that this would be the case. Huey Long would dominate Louisana for over three decades in the alternating capacities as governor-senator-governor. He would be the original "comeback kid" and would be the inspiraton for a young admirer from the neighboring state of Arkansas named Bill Clinton.