The attention President Clinton has heaped on vote-rich California is paying off. He headed home from his 27th trip there with $4 million from Hollywood donors and a commanding lead over GOP rival Bob Dole in the polls. The president ended his three-day Western campaign trip yesterday with a fundraiser at the lavish Santa Monica estate of supermarket magnate Ron Burkle that earned $4 million for the Democratic National Committee. It was a high-priced affair. Tickets ranged from $1,000 per person for a garden reception to $12,500 per seat for dinner and a concert emceed by actor Tom Hanks that featured Chicago, The Eagles, Barbra Streisand and The Neville Brothers. Guests included director Rob Reiner, actor Kevin Spacey and actresses Sharon Stone, Shirley MacLaine, Joan Collins and Carrie Fisher.