The national “blue wave” was more like a tsunami in Connecticut.

Republicans lost nearly all their seats in the state Senate, plus roughly a dozen more in the House of Representatives.

Despite their massive new majorities, Gov. Ned Lamont and other Democrats pledged to work with GOP lawmakers.

Democrats now hold commanding supermajorities in Hartford after their biggest election night in 52 years.

“Last night, the voters of Connecticut and this country sent a message to Washington,” state comptroller Sean Scanlon said during an afternoon rally at the state Capitol.

According to unofficial results, Democrats will hold at least a 115-33 majority in the Connecticut House – with three races still undecided as of Wednesday afternoon.

The rout went even deeper in the state Senate, where Republicans will only hold three of 36 seats.

Senate Republican leader Stephen Harding (R-Brookfield) lost his seat, along with veteran lawmakers John Kissel (R-Enfield), Heather Somers (R-Groton), Jason Perillo (R-Shelton), Craig Fishbein (R-Wallingford), Jeff Gordon (R-Woodstock), Greg Howard (R-Stonington) and Mitch Bolinsky.

The losses could have major policy implications. Kissel and Howard frequently advocated for law enforcement, while Fishbein is a leading voice against new gun restrictions.

State Rep. Cara Pavalock-D'Amato was also ousted.

The Bristol Republican made headlines for wearing a blazer bearing the words “ICE IN” – in support of federal immigration enforcement – to Lamont’s State of the State address. The speech occurred just weeks after Immigration and Customs Enforcement agents fatally shot Renee Good and Alex Pretti in Minnesota.

Democrats also flipped two key Senate seats in Fairfield County, including the one belonging to Republican gubernatorial candidate Ryan Fazio in Greenwich.

With the election behind him, Lamont said he plans to push for the Connecticut Option, his universal health insurance proposal.

“We’ll see what happens in Washington D.C., whether they still plan to cut a billion dollars out of Medicaid,” he told reporters on Wednesday.

Lamont also promised to expand his Early Childcare Endowment. Starting this summer, families making up to $100,000 a year will receive free childcare.

But Lamont cautioned that he won’t support new taxes or programs that the state can’t afford.

“We like to make promises that we can keep,” he said.

That could put the centrist governor on a collision course with incoming Democrats who ran on expanding the social safety net – and taxing the wealthy to pay for it. Lamont’s own party has enough votes to override his vetoes.

“More people is – it can be challenging, but it also offers more opportunities,” said Connecticut House Speaker Matt Ritter (D-Hartford). “We’re electing people from districts that haven’t had a Democrat in a long time potentially, probably more moderate and ‘purple-ish’ in nature, so they'll bring a different perspective.”

Election Night brings a harsh new reality to Connecticut Republicans.

"We knew we were going into a tough cycle,” said state Rep. Vin Candelora (R-North Branford), the top Republican in the Connecticut House. “I think the federal headwinds were certainly a lot stronger and impacted all of our state races much more than we had anticipated.”

The GOP has seen its numbers gradually whittle down since Lamont was elected in 2018. That year, they held half of all Senate seats.

“My concern is going to be is, what the makeup sort of looks like,” Candelora said. “Putting aside the party labels, you know, are we going to see a more progressive income tax, capital gains taxes?”

Republicans could have an ally in Lamont, who has joined with Republicans to oppose a “millionaire’s tax,” similar to New York state. Candelora and Ritter also have a cordial working relationship.

“My governing style hasn't changed,” Lamont insisted. “Big table, open door. And I welcome progressives, moderates, Republicans. You know, come in.”

Lamont defeated Fazio to win a nearly unprecedented third term. A one-time swing state. Connecticut has not elected a GOP governor in 20 years.