Bill Clinton, election denier? That’s the prospect heaving into view now that the 42nd president is raising doubts about the legitimacy of the vote tallies on November 5. What he said is that he’s wondering “whether we can get an honest, open count.” With the presidential contest in a “dead heat,” as NBC News puts it, Mr. Clinton’s remarks suggest an emerging Democratic strategy if the votes don’t go their way: Challenge the integrity of the balloting.