WASHINGTON, Aug. 23 (CGTN) - U.S. President Donald Trump's senior adviser Kellyanne Conway on Sunday said she will leave the White House by the end of August, citing a need to focus on her family.

"I will be transitioning from the White House at the end of this month," Conway, who has four children with Trump critic George Conway, said in a statement.

"As millions of parents nationwide know, kids 'doing school from home' requires a level of attention and vigilance that is as unusual as these times."

The 53-year-old was Trump's third campaign manager in 2016 and was also the first woman to successfully manage a presidential campaign to victory. She has served in her White House role since the beginning of the administration.

Conway has been one of Trump's most loyal and outspoken defenders in public and on cable news.

More recently, the adviser was instrumental in getting Trump to restart regular, though shorter, White House briefings about the coronavirus outbreak, a practice that officials have viewed as successful in helping to stop a drop in opinion polls the president has suffered largely because of his handling of the pandemic.

Conway's husband George, an outspoken Trump critic, tweeted that he would be leaving his role with the Lincoln Project, a group of anti-Trump Republicans, for similar reasons.

"So I'm withdrawing from @ProjectLincoln to devote more time to family matters," George Conway tweeted. "And I'll be taking a Twitter hiatus. Needless to say, I continue to support the Lincoln Project and its mission. Passionately."

"We disagree about plenty but we are united on what matters most: the kids," Kellyanne Conway said.

She is expected to speak at the 2020 Republican National Convention this week.