Illinois Congressman Sean Casten, a Democrat who represents some of the Chicago suburbs and who has been in Congress since 2018, has introduced a constitutional amendment to alter the U.S. Senate, and also to somewhat alter the electoral college. Here is the text.
It would add twelve U.S. Senators to be elected at-large. Voters of the District of Columbia and U.S. territories would be allowed to vote for these Senators. Four of them would be elected in each election. Ranked choice voting would be used to elect them.
The proposed amendment says nothing about how candidates for Senate-at-large would get on the ballot. Obviously there would need to be a federal ballot access law, because it would make no sense if the various candidates were on the ballot in some states but not other states.
The amendment also says there would be twelve new presidential electors, also elected at-large. These candidates would also need a federal ballot access law. Thanks to Fairvote for this news.