Sen. Marco Rubio is gearing up to seek a third term in 2022 after coming under attack from Democrats just days after the conclusion of this year’s general election.

The Florida Republican has made no formal announcement, but after Democratic operatives in the Sunshine State unveiled retirerubio.org and activated the Twitter account @retirerubio, the senator issued a fundraising appeal in an email to grassroots supporters and began taking steps to mount a campaign for reelection, knowledgeable GOP sources said Tuesday.