The Senate and House of Reps comprise the Electoral College - 538 votes (District of Columbia gets 3 votes by Constitutional Amendment). All States except Nebraska and Maine have a ‘winner take all’ for their electors.
Winning the 11 most populous states would give sufficient electoral votes to win (270 Electors). Michigan ranks 10th, so it is an important state to win. This is where cross-over voting has made the difference in Open Primary states, IMHO. I don’t know anyone who wanted McCain in 2008 in Michigan, but he won. Same with Romney in 2012, even though he was born and raised here but is still a whimpering RINO.
Here are the Top 11 most populated States with their elector counts adding to the needed 270:
California 55
Texas 38
Florida 29
New York 29
Illinois 20
Pennsylvania 20
Ohio 18
Georgia 16
North Carolina 15
Michigan 16
New Jersey 14
Of those 11, which ones would you put squarely in the ‘R’ column come election time?
Here are 21 states that if all went ‘R’ there still wouldn’t be enough electoral votes to win (229 votes) - didn’t include Nebraska or Maine due to their proportional counting of electors - also left off some states that have traditionally gone Democrat in the past, but could be in play:
Texas
Florida
Ohio
Georgia
North Carolina
Michigan
Indiana
Tennessee
Wisconsin
South Carolina
Alabama
Louisiana
Kentucky
Oklahoma
Iowa
Mississippi
Arkansas
Kansas
Idaho
South Dakota
Wyoming
It’s all about the numbers.
What does make sense is the idea I've heard of supporting all states adopting the proportional elector allocation.