Sen. Hillary Clinton is set to be a guest on the Late Show with David Letterman on Feb. 4, the night before Super Tuesday, ET reports. Hours after her scheduled appearance, 24 states will go to the polls to vote in the presidential primaries. Barack Obama - Clinton's main rival for the Democratic nomination - had his own moment in the Letterman spotlight recently, during which he did his own top-10. Will a similar list from the New York senator have sway with voters the next day? Only the ballots - and the laughs - will tell. - Anna Dimond Related: " Video Blog: Watch Obama's Top 10 " Hillary Clinton Talks Adultery with Tyra