"We welcome Lt. Governor Sanchez into the race and look forward to contrasting Heather Wilson's conservative record with his invented one. On issue after issue John Sanchez is not who he says he is, and Republican voters will be quick to figure that out."
You probably could say Sanchez started it today with his thinly-disguised barb in his video saying “We don’t want to return people back to Washington, D.C., who got us into this mess in the first place."
Only a year and a week or so before primary day.
UPDATE: I probably should mention the above quote from the Wilson campaign was from Heather Wade, the deputy finance director.