Which US president was re-elected with the slogan "Don't change horses in mid-stream"?

Question

What was the name that US President Franklin D. Roosevelt gave to his package of economic programmes in the mid 1930's with the goals of "the 3 R's": Relief to the unemployed & farmers, Reform of business and financial practices, and Recovery of the economy?

Answer 1

Abraham Lincoln

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Meaning
Don't change horses in mid-stream. Don't change your leader or your basic position when part-way through a campaign or a project.

Origin
From an 1864 speech by Abraham Lincoln, in reply to Delegation from the National Union League who were urging him to be their presidential candidate. An old Dutch farmer, who remarked to a companion once that it was not best to swap horses when crossing streams.