[capitan_refugio]

The Constitution leaves it to the states how they want to determine their Electoral College votes (Article II, Section 1, Clause 2). It does not require "winner take all," or even that the people of the state get to vote for Electors. As late as 1860, South Carolina still determined its Electors by a vote of the State Legislature itself.

The only point of concern I would have is that the Presidential election in Colorado may be certified before the ballot issue. It seems to me that you cannot change the system after the election (similar to the issue in Bush v Gore?)

[Always Right]

The only point of concern I would have is that the Presidential election in Colorado may be certified before the ballot issue. It seems to me that you cannot change the system after the election (similar to the issue in Bush v Gore?)

Correct, see post 18 which was the law cited in the 9-0 ruling which overturned the Florida Supreme Court ruling to alter the rules of the election.