Idea: 10 biggest states get 3 senators

[Schiff for Senate]

That's a good idea, but it can be improved upon and there's no way it would become law.
It's passage would require a constitutional amendment, which only 10 state legislatures would ratify - 38 are required. Two-thirds of the legislature won't support such a bill either, since most come from one of the smaller 40 states.

What might be better is if the top 40 or 45 states be given an extra Senator, or the smallest 5-10 states have just 1 senator, because this concern is valid: the average congressional district has around 700,000 or so people, and the House is 4.35 times as large as the Senate. Yet Wyoming (population 570,000) has 2 Senators and 1 Representative, giving it a very disproportionate amount of representation. Since Wyoming has a population 1/10 of that of the average state, it makes sense for it to have just 1 Senator. Wyoming is smaller than most congressional districts (which have 1 representative in congress), but has 3 representatives in congress, making it more over-represented than most states. More preferable would be if all other states could have 3 senators (with 1 senate election in each state every even year), and Wyoming and other such states have 2 senators. In the eighteenth century, the most populated state (Virginia) was ten times as populated as the least populated state (Delaware). California today is (around) 65 times as large as Wyoming, and has 55/3 as many representatives in the House/Senate and in presidential elections.

The passage of a bill increasing the number of senators in most states to 3 might easily pass Congress. It wouldn't significantly favour either party, and it would help most states be more represented. Most people likely wouldn't complain to having more representation in Congress. The only ones who would would be people from Wyoming or other states who are stuck with 2 senators - and as this proves, those states have way less people than the other 45-49. Giving an extra senator to just 10 states would mean a majority of the population is now under-represented, and it definitely wouldn't become law (not that it's necessarily a bad idea).