Did he undermine McClintock?
Yes. The RINO establishment was backing carpetbagger ex-Congressman liberal Doug Ose for Doolittle’s seat. It’s hard to overstate how much the RINO establishment HATES McClintock and the lengths to which they’ve gone to stop him in efforts to move beyond the legislature (he was set to win statewide office in ‘94 for Comptroller, for example, and Wilson deliberately sandbagged him. He was ignored by Ah-nold when he ran for Lt Governor in ‘06, who was quite happy to see Garamendi win).