I think Gunzberger is dropping the ball on lists of candidates, he only has 2 Republicans listed in that race and there are 4 running (including State Sen. Kent Cravens). According to the NM Political Blog, Sanchez made it official about 3 weeks ago.
http://www.joemonahansnewmexico.blogspot.com/2009_12_01_joemonahansnewmexico_archive.html
Scroll down to the Friday, December 18th blog entry, I can’t seem to link it directly.
Ourcampaigns.com omits Sanchez and Cravens too. A news article mentions a 5th candidate, Bea Sheridan, a nurse.
Nice to see Sanchez making a comeback bid.
By default I’m against a dynastic candidate all things being equal (though I like Carrol Campbell III in SC-01). Unless it was clear the Domenici name was the only way to win this one. He really ought to run for a lower office and make his own name.