Canada

canada as a state and voting left, all else the same wrt u.s. presidential election process...

canada would have two senators, increasing the senate to 102 members. and in a reapportioned house, receive 44 seats, 'taking' 5 from california; 4 from tx; 3 from fl; 2 ea from il, ny, nc, pa; 1 ea from al, az, co, ct, ga, in, ks, ky, md, ma, mi, mn, mo, mt, ne, nj, oh, or, ri, sc, tn, va, wa, wi.

using 2024 state results (note: figuring ne and me would basically cancel each other out anyway and to keep my 2-minute spreadsheet simple, i just left those two states all-or-nothing), and assuming the great commonwealth of canada, now a u.s. state, would vote left....

looks like it woulda been 287 for r, 253 for d; with 271 needed to win.

just adding a state doesn't change how electoral college votes are distributed, it's still heavily skewed in favor of low-pop states because states get equal representation in the senate regardless of population. remember each member of congress.. that's house + senate.. gives their state one ec vote. that's why the hypothetical here doesn't change the overall outcome.

if each province became a state instead.. things might get 'interesting', then.