What if Canada and Greenland join the United States?

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The new electoral landscape

So what if Trump gets what he wants that Canada and Greenland become part of the United States? Rather than Canada being the 51st state, it makes more sense for each province to become a state, i.e. 51st to 60th states, while the sparsely populated territories and Greenland become "districts" similar to Washington DC. With this assumption, how would it change the electoral map of the expanded United States?

Now assuming the number of seats in the US House of Representatives remains capped at 435, it means that some existing US congress members will have to give ways to the Canadian. Based on the US congressional apportionment rule and the 2020 census data from the US (and 2021 from Canada), the following table lists the new "states" and their respective number of representatives.

State / DistrictPopulationNum of RepsChangesElectoral College
California39,538,22346-648
Texas29,145,50534-436
Florida21,538,18725-327
New York20,201,24924-226
Ontario14,223,94217+1719
Pennsylvania13,002,70015-217
Illinois12,812,50815-217
Ohio11,799,44814-116
Georgia10,711,90813-115
North Carolina10,439,38812-214
Michigan10,077,33112-114
New Jersey9,288,99411-113
Virginia8,631,39310-112
Quebec8,501,83310+1012
Washington7,705,2819-111
Arizona7,151,5028-110
Massachusetts7,029,9178-110
Tennessee6,910,8408-110
Indiana6,785,5288-110
Maryland6,177,2247-19
Missouri6,154,9137-19
Wisconsin5,893,7187-19
Colorado5,773,7147-19
Minnesota5,706,4947-19
South Carolina5,118,4256-18
Alabama5,024,2796-18
British Columbia5,000,8796+68
Louisiana4,657,757608
Kentucky4,505,8365-17
Alberta4,262,6355+57
Oregon4,237,2565-17
Oklahoma3,959,353507
Connecticut3,605,9444-16
Utah3,271,616406
Iowa3,190,369406
Nevada3,104,614406
Arkansas3,011,524406
Mississippi2,961,279406
Kansas2,937,8803-15
New Mexico2,117,522305
Nebraska1,961,5042-14
Idaho1,839,106204
West Virginia1,793,716204
Hawaii1,455,271204
New Hampshire1,377,529204
Maine1,362,359204
Manitoba1,342,1532+24
Saskatchewan1,132,5051+13
Rhode Island1,097,3791-13
Montana1,084,2251-13
Delaware989,948103
Nova Scotia969,3831+13
South Dakota886,667103
North Dakota779,094103
New Brunswick775,6101+13
Alaska733,391103
District of Columbia689,545003
Vermont643,077103
Wyoming576,851103
Newfoundland and Labrador510,5501+13
Prince Edward Island154,3311+13
Greenland56,699*003
Northwest Territories41,070003
Yukon40,232003
Nunavut36,858003
* 2024 estimate

Would this change the presidential election result?

With the addition of 10 states and 4 districts, the electoral college will increase from 538 to 570. It will require at least 286 electoral votes to win the presidency.

Based on the 2025 Canadian federal election results, assuming those favour the Liberals will vote for the Democrats and the Conversative for the Republicans, this is how the new states will split between red and blue.

Province / TerritoryLiberalConservativeDem / Rep
Ontario49.6%44.3%Democratic
Quebec43.0%23.5%Democratic
British Columbia42.3%41.5%Democratic
Alberta28.4%64.8%Republican
Manitoba41.2%46.9%Republican
Saskatchewan26.8%65.1%Republican
Nova Scotia58.1%35.7%Democratic
New Brunswick54.1%41.3%Democratic
Newfoundland and Labrador54.4%40.0%Democratic
Prince Edward Island58.0%37.2%Democratic
Territories50.5%34.6%Democratic

And the Greenland 2025 election was won by the Democrats which opposes joining the US, so it can be assumed that Greenland will be a blue "district".

PartyVote %
Democrats30.26
Naleraq24.77
Inuit Ataqatigiit21.62
Siumut14.88
Atassut7.39

Together with the 2024 US election result, this is what the new electoral map will look like:

The poor Puerto Rican cannot vote in the presidential election

This equates to 269 electoral votes for the Democrats, still short of the 286 required to win. This is assuming that the Democrats will still win 1 electoral college vote from Nebraska despite its total now reduces from 5 to 4.

But what if the Canadians hate Donald Trump so much that the Prairie "states" all turn to blue? It will increase the Democrats' votes to 283, still 3 short of the majority.

So for the Democrats to win the next election, even with the help of the Canadians and Greenlanders, they will have to flip at least one red state into blue. The most marginal one is Wisconsin (49.60% vs 48.74%, or a difference of 29,397 votes in the 2024 election). It will add 9 more electoral votes, bringing the total to 292 votes.

What is required for the Democrats to win

I hope this is an accurate analysis of what will (and hopefully never) happen and an interesting read. Let me know if any assumption or calculation is incorrect. Thanks for reading.

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