@SNerd they didn't address it directly, but in passing lumped federal representatives and senators in with the president, so their ruling here would likely apply to them as well.
Outside of a authorization from the feds, the Court finds that states would be interfering in federal operations by blocking federal candidates on those grounds.
> "But there is little reason to think that these Clauses implicitly authorize the States to enforce Section 3 against federal officeholders and candidates. Granting the States that authority would invert the Fourteenth Amendment’s rebalancing of federal and state power."