Walker's master heading for "Conclusions of Law" is:

Plaintiffs challenge Proposition 8 under the Due Process Protection Clauses of the Fourteenth Amendment. Each is independently meritorious, as Proposition 8 both and Equal challenge unconstitutionally burdens the exercise of the fundamental right to marry and creates an irrational classification on the basis of sexual orientation.

Regarding due process, he says:

Because plaintiffs seek to exercise their fundamental right to marry, their claim is subject to strict scrutiny. Zablocki, 434 US at 388. That the majority of California voters supported Proposition 8 is irrelevant, as "fundamental rights may not be submitted to [a] vote; they depend on the outcome of no elections." West Virginia State Board of Education v Barnette, 319 US 624, 638 (1943). Under strict scrutiny, the state bears the burden of producing evidence to show that Proposition 8 is narrowly tailored to a compelling government interest. Carey v Population Services International, 431 US 678, 686 (1977). Because the government defendants declined to advance such arguments, proponents seized the role of asserting the existence of a compelling California interest in Proposition 8.
     As explained in detail in the equal protection analysis, Proposition 8 cannot withstand rational basis review. Still less can Proposition 8 survive the strict scrutiny required by plaintiffs' due process claim. The minimal evidentiary presentation made by proponents does not meet the heavy burden of production necessary to show that Proposition 8 is narrowly tailored to a compelling government interest. Proposition 8 cannot, therefore, withstand strict scrutiny. Moreover, proponents do not assert that the availability of domestic partnerships satisfies plaintiffs' fundamental right to marry; proponents stipulated that "[t]here is a significant symbolic disparity between domestic partnership and marriage." Doc #159-2 at 6. Accordingly, Proposition 8 violates the Due Process Clause of the Fourteenth Amendment.

From the EP section:

In the absence of a rational basis, what remains of proponents' case is an inference, amply supported by evidence in the record, that Proposition 8 was premised on the belief that same-sex couples simply are not as good as opposite-sex couples. FF 78-80. Whether that belief is based on moral disapproval of homosexuality, animus towards gays and lesbians or simply a belief that a relationship between a man and a woman is inherently better than a relationship between two men or two women, this belief is not a proper basis on which to legislate. See Romer, 517 US at 633; Moreno, 413 US at 534; Palmore v Sidoti, 466 US 429, 433 (1984) ("[T]he Constitution cannot control [private biases] but neither can it tolerate them.").
    The evidence shows that Proposition 8 was a hard-fought campaign and that the majority of California voters supported the initiative. See Background to Proposition 8 above, FF 17-18, 79- 80. The arguments surrounding Proposition 8 raise a question similar to that addressed in Lawrence, when the Court asked whether a majority of citizens could use the power of the state to enforce "profound and deep convictions accepted as ethical and moral principles" through the criminal code. 539 US at 571. The question here is whether California voters can enforce those same principles through regulation of marriage licenses. They cannot. California's obligation is to treat its citizens equally, not to "mandate [its] own moral code." Id (citing Planned Parenthood of Southeastern Pa v Casey, 505 US 833, 850, (1992)). "[M]oral disapproval, without any other asserted state interest," has never been a rational basis for legislation. Lawrence, 539 US at 582 (O'Connor, J, concurring). Tradition alone cannot support legislation. See Williams, 399 US at 239; Romer, 517 US at 635; Lawrence, 539 US at 579.
     Proponents' purported rationales are nothing more than post-hoc justifications. While the Equal Protection Clause does not prohibit post-hoc rationales, they must connect to the classification drawn. Here, the purported state interests fit so poorly with Proposition 8 that they are irrational, as explained above. What is left is evidence that Proposition 8 enacts a moral view that there is something "wrong" with same-sex couples. See FF 78-80.
    The evidence at trial regarding the campaign to pass Proposition 8 uncloaks the most likely explanation for its passage: a desire to advance the belief that opposite-sex couples are morally superior to same-sex couples. FF 79-80. The campaign relied heavily on negative stereotypes about gays and lesbians and focused on protecting children from inchoate threats vaguely associated with gays and lesbians. FF 79-80; See PX0016 Video, Have You Thought About It? (video of a young girl asking whether the viewer has considered the consequences to her of Proposition 8 but not explaining what those consequences might be).