“ The appellants object now to the two-month residency requirement as vigorously as they did to the six-month rule in effect when they brought suit. They say that such statutes, in Colorado and elsewhere, continue to have an adverse effect upon millions of voters throughout the Nation. But the appellants' opposition to residency requirements in general cannot alter the fact that so far as they are concerned nothing in the Colorado legislative scheme as now written adversely affects either their present interests, or their interests at the time this litigation was commenced. ”

“ We noted that even though the 1968 election was over, 'the burden * * * placed on the nomination of nominees for statewide offices remains and controls future elections, as long as Illinois maintains her present system as she has done since 1935.' 394 U.S., at 816, 89 S.Ct. ”

“ Thereafter the Colorado Legislature reduced the residency requirement for a presidential election from six months to two months.
The 1968 election is history, and it is now impossible to grant the appellants the relief they sought in the District Court. Further, the appellants have now satisfied the six-month residency requirement of which they complained. But apart from these considerations, the recent amendatory action of the Colorado Legislature has surely operated to render this case moot. We review the judgment below in light of the Colorado statute as it now stands, not as it once did. ”