An even better strategy for the GOP is to start running exactly 2 strong candidates in every race, and hope that the Democrats run 3+. Then results like this could happen (not that I think it will in this race, mainly because Newsom is too strong):
1. Allen 17%
2. Cox 17%
3. Newsom 16%
4. Villaraigosa 16%
5. Chiang 12%
6. Eastin 10%
7. Renteria 7%
Others 5%
Just like that, nearly 2 times fewer R votes than D votes, and yet the runoff is R vs. R.
Question, even if Republicans run "strong candidates", why does the leading Democrat get 10% less than he's polling at in your example?