Buttigieg takes dig at Sanders working 'for years' in Washington

Former South Bend, Ind., Mayor Pete ButtigiegPeter (Pete) Paul ButtigiegSanders says idea he can't work with Republicans is 'total nonsense' Sanders defends Castro comments in wake of backlash from some Democrats Candidates face pressure to exit presidential race MORE took an apparent dig at Sen. Bernie SandersBernie SandersSanders says idea he can't work with Republicans is 'total nonsense' Sanders defends Castro comments in wake of backlash from some Democrats Sanders releases list of how to pay for his proposals MORE (I-Vt.) in a fundraising email, implying his 2020 rival is a Washington insider.

The email also appeared to take a dig at his fellow billionaire rivals Michael BloombergMichael Rubens BloombergSanders defends Castro comments in wake of backlash from some Democrats Klobuchar releases medical report that says she's in 'very good health' Buttigieg proposes undoing SALT deduction cap MORE and Tom SteyerTom Fahr SteyerCandidates face pressure to exit presidential race The South Carolina Democratic primary will be decided by black women Poll: Biden's lead narrows to 4 points over Sanders in South Carolina MORE as "people who can spend millions of their own dollars on a campaign," though Buttigieg did not name them.

"Some of our competitors, like Bernie Sanders, have even run for president before -- and that means that they had a head start on things like building their fundraising lists," the email reads. "Having several million people on your email list allows you to do things like raise $4 million in two days -- something Bernie says he did in the 48 hours after the last debate."

ADVERTISEMENT

"If we are going to turn the page on our politics, we have to be able to compete with the people who have been working in Washington for years, and the people who can spend millions of their own dollars on a campaign. That means we need your help right now with another donation to this campaign," it continues. 

Buttigieg has previously aimed his fire on Sanders's progressive counterpart, Sen. Elizabeth WarrenElizabeth Ann WarrenCandidates face pressure to exit presidential race Buttigieg proposes undoing SALT deduction cap Bloomberg called Warren 'scary,' knocked Obama's first term in leaked audio MORE (D-Mass.), clashing with her in the two previous primary debates. 

The 37-year-old former mayor has run as an outsider to Washington, D.C., and has advocated a more moderate platform than Sanders or Warren.

Although Sanders was first elected to Congress in 1990, he has often been viewed as a Washington outsider for the majority of his career, supporting a number of progressive issues like "Medicare for All." 

Sanders most recently went against the mold on Thursday, when he joined nine other senators in voting against the U.S.-Mexico-Canada Agreement. 

The Vermont senator has also pushed back against the Democratic Party establishment and took the political world by surprise in 2016 in his unexpectedly strong challenge to Democratic-establishment favorite, Hillary ClintonHillary Diane Rodham ClintonBloomberg called Warren 'scary,' knocked Obama's first term in leaked audio Trump trails Democratic challengers among Catholic voters: poll Sanders under fire from Democrats over praise for Castro regime MORE

The Hill has reached out to the Sanders campaign for comment.