Godaddy gives domain registrants some of the weakest protection around - but the registrant could transfer the domain to another domain registrar.
You're right, I think twice before posting.
If the domain name is using the affected candidate's real name then as said earlier in the thread you can file a UDRP for $1500 which will lock the domain and reveal registrant details, regardless of whether you win the UDRP.
This is true and a good way to obtain the information. So far out of the loop that I don't know if campaign funds can be used for this, but it's not worth it in my opinion. If someone had DavidWalker.com and I wanted it for my campaign into an office; albeit slanderous and not true, I would let it slide. Why? Because the media will question me and I'm a master-debater.
Too soon in a politician's career to pull a move like this. It could potentially be the end of it. After I obtained office; in my free time, I would pursue it slowly and silently to acquire the domain. I may even give into "terrorists" (cyber squatters) and pay what they want to get it (if it's reasonable as compared to wasting time in meetings with a lawyer and court rooms when I could be doing my job).
But bear in mind losing the domain or privacy does not stop the site - if the site violates the hosting companies TOS, or copyright or other laws, you can complain to the hosts, who may shut the site down.
Definitely something to consider. The domain could be at GoDaddy, but hosted at [insert the worst "dedicated server" company here] in Panama. There is nothing that can be done.
I would wait until he got office and use geo+mayor+2015.com for the campaign in the meanwhile and then work on obtaining the domain after elections are over, cause he may not even win (we all have to face reality). Then, he can use it for progressing in his political career (governor, etc.) or to just "brand" him permanently in office.
If he so happens to be questioned by the "media" about allegations made on F+L.com; I would expect nothing less from a mayor than the President, to answer and debunk them getting to the facts.
Lot of good information posted here to not only get who owns it, but to get the domain back and other routes to unlock privacy, though expensive.
Cheers and good luck to your buddy,
David