Under cross-examination from plaintiffs' attorney David Boies, Miller admitted that some of the materials he relied on in his testimony were supplied by lawyers for Proposition 8 rather than his own research.

Miller also agreed that the military's "Don't Ask, Don't Tell" policy discriminates against homosexuals and that no other minority group in the nation is dismissed from the armed services on the basis of its status.

The Proposition 8 sponsors are seeking to use Miller's testimony to counter an opposing view presented by Stanford University political science professor Gary Segura on behalf of the plaintiffs last week.

Segura testified that gays and lesbians lack "a meaningful degree" of political power.

He said that gays and lesbians have been targeted nationwide in ballot initiatives, including Proposition 8, more than any other group and have lost 70 percent of more than 150 ballot measures presented to voters throughout the country since the 1970s.

"Initiatives have been used to roll back gains by gays and lesbians over and over again," Segura said last week.