Because when you have two Republicans and one Democrat, you are splitting the vote to be far more in favor of the one Democrat than if there was only one Republican.
Granted, McClintock was so weak he got less vote than even he predicted he would, but it is darn nervy to take the risk like that agaisnt what is best for the state of California.
Hey dude! You're entitled to those opinions if you are determined to hold them near and dear to you heart, but you're not makin any converts no matter how many times you and the handful of other ex-posse members pound away on your bogus theme song!!!
Even though in normal circumstances you'd possibly be convinced by the actual factual stuff posted by true Conservative Republicans like calcowgirl, Carry_Okie, Amerigomag, ElkGroveDan and many others equally endowed with above average intelligence and inspiring posts... You would still cling desperately to your rightful, but untennable position like a drowning man!!! Just out of pure bullheaded stubborness, right???
Trite, but true: "You can convince a man against his will, but he's of the same opinion still" (Burma Shave)