Newly elected Rep. Alexandria Ocasio-Cortez and former Alaska Gov. Sarah Palin are trading barbs on Twitter.

“Now that’s *TWO* fallen GOP Vice Pres candidates going after a freshman Congresswoman that’s not even sworn in yet,” Ocasio-Cortez tweeted. “Isn’t it a little early to be bringing out the big guns? Especially when they look like the FWD:RE:FWD:WATCH THIS grandpa emails from the ‘08 election they lost.”

The spat began after Palin, running mate to Republican presidential candidate John McCain in 2008, tweeted on Monday: “YIKES: Ocasio-Cortez Fumbles Basic Civics TWICE In 1 Statement.”

Palin’s tweet came alongside an article from governorpalin.org, which included a screenshot of a Twitter post from Ryan Saavedra, a reporter at The Daily Wire. The reporter on Sunday evening shared a video of Ocasio-Cortez making a mistake when talking about the government.

“If we work our butts off to make sure that we take back all three chambers of Congress — uh, rather, all three chambers of government: the presidency, the Senate, and the House in 2020, we can’t start working in 2020,”’ Ocasio-Cortez is heard saying on the video.

Ocasio-Cortez fired back, turning the conversation to health care.

“Maybe instead of Republicans drooling over every minute of footage of me in slow-mo, waiting to chop up word slips that I correct in real-tomd (sic), they actually step up enough to make the argument they want to make: that they don’t believe people deserve a right to healthcare,” she tweeted.

OCASIO-CORTEZ SAYS PEOPLE KEEP MISTAKING HER FOR A CAPITOL HILL INTERN

She later tweeted a correction of the spelling of “real-time.”

In a follow-up to her retort aimed at Palin, Ocasio-Cortez revealed on Twitter Tuesday that the other vice presidential candidate she had been referring to was “Lieberman,” seemingly referring to 2000 Democratic vice-presidential candidate Joe Lieberman.

She later tweeted: “For those who need their jokes explained to them: surprise! This tweet thread is humorous! The emoji in the original tweet signals that humor is indicated in the statement. :) (You know, because Lieberman killed the public option for healthcare and endorses Republicans).”

Ocasio-Cortez, the 29-year-old Democratic socialist from New York, defeated her Republican challenger earlier this month in the midterm elections, becoming the youngest female elected to Congress.

Fox News’ Dom Calicchio contributed to this report.