Newt Gingrich calls F.D.R. the greatest President of the century. Bob Dole praises F.D.R. as an "energetic and inspiring leader during the dark days of the Depression; a tough, single-minded Commander in Chief during World War II; and a statesman."
Also Ronald Reagan adopted FDR's "rendezvous with destiny" line and voted for him four times. Reagan found FDR great because of his political inspiration, not so much because of his actual success. It's what Rush Limbaugh calls the triumph of "good intentions" over actual results for Democrats.