A super PAC called Our Heritage Matters, which was registered less than a month ago, has spent $6.5 million in the last days of campaigning to promote obscure candidates over Republicans it portrays as liberals.
The other Dan Sullivan in Alaska has drawn the most attention, but both parties are quietly trying to use little-known candidates in other battlegrounds to siphon votes, too.
Dan J. Sullivan, a retired teacher in Alaska, was recruited by Democratic operatives to join the race against Senator Dan S. Sullivan, a Republican, whose allies have been left worrying that voters will be confused.