Fifty-four Senate seats, and a House majority still being counted

By Friday the shape of the next Congress was settled even where individual seats were not. CBS News estimated Democrats will hold at least 54 Senate seats and around 256 House seats in January¹. The Guardian’s live tally had Democrats at 54 Senate seats (+7, including two independents who caucus with them) against 44 Republicans, with 33 of 35 races called; the House stood at 253 Democrats (+41) to 157 Republicans with 410 of 435 races called². Reuters’ graphics desk put the House nearer 250–156 on Thursday afternoon Eastern time³.

What is still open. Senate races in Mississippi and Alaska and several dozen House seats remained unresolved on Friday¹. In Mississippi, Democrat Scott Colom led by about 1,800 votes as counting continued; CBS called a Colom win one of the cycle’s biggest potential upsets¹. Democrats have flipped more than 40 House districts so far, including seats once treated as deep red, while staving off losses from redistricting¹.

Why the size matters to markets. Euronews and Reuters both framed Friday’s equity sell-off around the chance that a Democrat-led Congress will tighten AI and data-centre rules [see Markets]. A 54–44 Senate is a different legislative machine from a 51–49 one; a House majority above 250 is different from one that hangs on a handful of seats. The maps are largely drawn. The majorities are still being measured. For you, that is the week after election week: less theatre, more arithmetic.