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WASHINGTON - John McCain is set to appear on NBC's "Saturday Night Live" just three days before the presidential election.

Aides say the Republican presidential candidate will make a detour from battleground states to the late-night weekend show that has been a must-watch for many during the political season.

Earlier this month, McCain running mate Sarah Palin and her impersonator, Tina Fey, earned "Saturday Night Live" its best ratings in 14...