Quincy City Council President Ian Cain announced Wednesday that he is joining the race to unseat U.S. Sen. Elizabeth Warren as a Republican, a move that also sets himself up against a well-funded conservative who jumped into the fray earlier this year.

In a short video posted to social media, Cain said he wants to “usher in the next generation of leadership” focused on the innovation economy and digital world. The United States is at a “crossroads,” he said, and Washington is broken.

Cain launched his bid with immediate critiques of Warren, arguing “no one has disappointed Massachusetts more than Elizabeth Warren.”

“Instead of working for Massachusetts, she’s working for herself. What’s worse, is that she’s incapable of delivering real results because she’s so bogged down in the extreme partisanship that keeps Washington and our government at a standstill,” he said in the video.

Warren has highlighted this year more than $50 billion in federal funding she has brought back to Massachusetts during her congressional tenure, including $372 million for the Sagamore Bridge.

“Sen. Warren has taken on tough fights and won — from lowering costs for student debt and hearing aids to taxing billionaire corporations to fund climate investments to helping deliver more than $50 billion in federal funding to Massachusetts — and she’ll continue working hard for Massachusetts families,” a spokesperson for Warren said in a statement.

Cain has been eyeing a potential run against Warren since at least the start of April, when he filed federal paperwork to open up the possibility.

The former registered independent and Democrat faces an uphill battle both against Warren, who has $4.4 million stashed away in her campaign account, and John Deaton, another Republican in the race who loaned himself $1 million to fund his challenge.

Cain said he wants to “fight for America’s safety and security,” find “compassionate solutions” to end an influx of migrants arriving in Massachusetts, and work to improve the state’s infrastructure.

“I’ll pass legislation that unleashes our economic potential and embraces our digital economy. I’ll be an independent voice for Massachusetts that gets shit done and fights for us above all else,” he said.