Have you read The Falcon Cannot Hear which involves a Landon Presidency?
It takes a lot of work to make Landon POTUS. The easiest way is to have Zangara kill FDR. Garner wouldn't be very good and he would brutally crush the Bonus Army, amongst other things.
No I have not, unfortunately
Well, I don't want you to plagarize.
No, of course not. If you will send me a link to it, I will review their premise
Link
The premise is a 2nd American civil war. The president before the civil war began was Landon (who eked out an electoral college majority in 1936 while getting 3rd in the Popular vote)
The way he got to the presidency is the same way fjihr mentioned.
However, if there is no civil war, then it would be cool to see what happens
I don't get it
Not enough. The polls suggested he would take five million votes from FDR. Even if we assume that that number holds, FDR would have still won.