You can find the order here.

What’s most notable is Justice Alito, purportedly applying Moore v. Harper’s anti-arrogation principle, saying that the interpretation here would clearly violate the power of the state legislature: “The applicants contend that this interpretation flouts the plain ‘meaning of the state election code, sce 25 Pa. Cons. Stat. §3050(a.4)(3)(i) (2019), and that the interpretation is so far afield that it also violates the Elections Clause and the Elec- tors Clause of the Constitution of the United States. See Art. 1, §4, cl. 1; Art. IL §1, cl. 2 Moore v. Harper, 600 U.S. 1, 37 (2028).”

That suggests an extremely muscular and intrusive role for the Supreme Court in some of the most sensitive cases they take in presidential elections.

UPDATE: As has been pointed out to me, Alito purports to just be describing applicants’ position, not his own. But I suspect he’s likely to embrace it.