Former Massachusetts Gov. Deval Patrick Deval PatrickRalph Gants, chief justice of Massachusetts supreme court, dies at 65 It's as if a Trump operative infiltrated the Democratic primary process Top Democratic super PACs team up to boost Biden MORE, who announced a 2020 presidential bid on Thursday, said some of his rivals in the crowded Democratic field are invoking nostalgia, while others are taking a "our big idea or no way" approach.

"Right now, we have a really talented, a really gifted, and a really hard-working, and hard-sacrificing field of Democratic candidates, many of them my personal friends," Patrick said on "CBS This Morning" during his first televised interview after announcing his presidential bid.

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"But we seem to be migrating to on the one camp, sort of nostalgia. Let's just get rid of the incumbent president, [and] we can go back to doing what we used to do, or it's our big idea or no way," he continued.

The comment appeared to be a reference toward former Vice President Joe Biden Joe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE's rhetoric about his time in the Obama administration, as well as Sens. Bernie Sanders Bernie SandersSirota reacts to report of harassment, doxing by Harris supporters Republicans not immune to the malady that hobbled Democrats The Hill's Morning Report - Sponsored by Facebook - Republicans lawmakers rebuke Trump on election MORE (I-Vt.) and Elizabeth Warren Elizabeth WarrenOvernight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds On The Money: Half of states deplete funds for Trump's 0 unemployment expansion | EU appealing ruling in Apple tax case | House Democrats include more aid for airlines in coronavirus package Warren, Khanna request IG investigation into Pentagon's use of coronavirus funds MORE's (D-Mass.) progressive proposals, like "Medicare for All."

Patrick was also asked during the appearance if he supports Medicare for All.

"No. Not in the terms we’ve been talking about," he responded. "I do support a public option."

Gov. @DevalPatrick on whether he supports Medicare for All: "No. not in the terms we’ve been talking about. I do support a public option." https://t.co/E0cY21sV2V pic.twitter.com/aogUJBAoEY — CBS This Morning (@CBSThisMorning) November 14, 2019

Patrick told CBS that he was jumping into the 2020 race because he saw an opportunity for "big ideas" to bring Americans together.

“I admire and respect the candidates in the Democratic field,” he said in the video announcing his campaign. “But if the character of the candidates is an issue in every election, this time is about the character of the country.”

His announcement comes ahead of Friday's deadline to register in the primary in New Hampshire, a state in which Patrick hopes to be competitive after serving two terms as governor of a neighboring state.

Patrick will likely face an uphill battle in catching up with the other candidates in terms of building his name recognition and in fundraising.