The race for the White House has shifted a gear. (BBC News: Hillary Clinton joins 2008 race)
Whilst I doubt Hillary Clinton will actually win her party's nomination (recent history is not the side of the early favourite Democrat) invariably people will be speculating on what to call the husband of a female US President. There aren't too many precedents and the husband of governors who use "First Lad" and "First Dude" don't seem likely to be trend setters. However Daniel Mulhern, husband of Michigan Governor Jennifer Granholm, seems to officially billed as "First Gentleman" and so maybe that term will catch on.
On a more pertinent question, just what is Hillary's given name this week? Her Senator website calls her "Hillary Rodham Clinton" but her campaign website calls her "Hillary Clinton". Studies have shown that "Hillary Rodham Clinton" polls better than "Hillary Clinton", (CNN.com: Poll: Spare the 'Rodham,' spoil her election) yet "Hillary Clinton" carries far more name recognition. Is she trying to have her cake and eat it?