Rep. Anna Paulina Luna, R-Fla., is resigning from the House Freedom Caucus, she announced in a letter to fellow conservatives on Monday.

It's the latest escalation in her fight against House GOP leaders and a small group of members on the right flank of their conference over the issue of proxy voting. Luna has teamed up with Democrats and several other Republicans on a mechanism aimed at forcing consideration of legislation that allows new parents in the House to vote remotely for 12 weeks around their baby's birth.

Republican Representative Anna Paulina Luna of Florida announced Monday that she has resigned from the House Freedom Caucus after the group moved to block a vote on her proposal that would allow new parents in Congress to vote by proxy instead of traveling with newborns.

Newsweek reached out to Luna via email on Monday for comment.

Republican Rep. Anna Paulina Luna of Florida withdrew her membership from the conservative House Freedom Caucus on Monday amid a divide over whether the lower chamber should allow new parents in Congress to vote remotely around the birth of their child. 

"Wirh a heavy heart, I am resigning from the Freedom Caucus," she wrote to her colleagues in a letter obtained by CBS News.

The ultra-conservative House Freedom Caucus threw its backing behind a stopgap funding package, bolstering Speaker Mike Johnson’s attempt to pass the bill without the help of House Democrats and avert a government shutdown on March 15.

The vote on the stopgap is set for Tuesday and Johnson can likely only afford to lose two Republicans on the measure if Democrats line up uniformly against it.

House Freedom Caucus Chairman Bob Good was adamant Wednesday that he could still eke out a win in his bruising Virginia primary contest against state Sen. John McGuire, despite trailing by more than 300 votes.

After the bulk of the ballots were tallied Tuesday night, McGuire — who scored the coveted endorsement of former President Donald Trump last month — declared victory, telling supporters: “I’m your Republican nominee.”

The political future of House Freedom Caucus Chair Bob Good is coming down to the final votes.

After a bitter primary battle with rival John McGuire in south-central Virginia’s 5th Congressional District, the vote count showed an exceedingly tight result Tuesday night, far closer than many expected. With each update to the results, Good and McGuire traded leads that at times were as low as single digits.

All eyes Tuesday are on Virginia’s 5th Congressional District, where House Freedom Caucus Chairman Bob Good could become the second incumbent ousted in a primary this cycle if former President Donald Trump has his way.

“If he’s reelected, Bob Good will stab Virginia in the back, sort of like he did with me,” Mr. Trump, the presumptive GOP presidential nominee, said Monday evening on a 12-minute tele-rally for Mr. Good’s primary opponent, state Sen. John McGuire.

Former President Donald Trump paid back House Freedom Caucus leader Rep. Bob Good Tuesday for his endorsement of Florida Gov. Ron DeSantis during the Republican primary — by backing Good’s challenger days after the congressman showed up at Trump’s Manhattan trial on charges of falsifying business records.

“Bob Good is BAD FOR VIRGINIA, AND BAD FOR THE USA,” Trump wrote on Truth Social.

Rep. Derrick Van Orden (R-WI) turned up the heat on a pressure campaign to oust House Freedom Caucus Chairman Bob Good (R-VA), accusing the Virginian of coming to Washington “to be famous.”

Good is fighting off a campaign coming from within his caucus to remove him, infighting that Speaker Mike Johnson (R-LA) has asked his members to refrain from carrying out. Good was one of eight House Republicans who voted to oust former Speaker Kevin McCarthy late last year.

Rep. Marjorie Taylor Greene, R-Ga., told reporters on Friday that she filed a motion to vacate House Speaker Mike Johnson, R-La., accusing him of having "betrayed" the "confidence" of the House GOP Conference by ushering through a bipartisan $1.2 trillion federal funding bill to avoid a partial government shutdown.

Johnson won the gavel in late October after his predecessor was ousted by a motion to vacate resolution earlier that month.