One of the most prominent faces of Donald Trump's second administration, press secretary Karoline Leavitt, has announced she is leaving the role less than three months before the critical US midterm elections.Ms Leavitt, who recently returned to the White House role from maternity leave, said she had decided to quit the position to focus on being a mother."Being a mother and welcoming a new baby while working in one of the most demanding jobs in the world has been the most rewarding yet challenging season of my life, to say the least," Ms Leavitt wrote on X.Mr Trump said it was "a decision I totally understand and respect"."Karoline will now be one of my top outside advisors, and an influential voice within the Republican Party, as we work to defy History, and conclusively win the Midterm Elections," he wrote on Truth Social.Mr Trump's Republican Party faces an uphill battle to retain control of Congress after the November 3 midterms, polls show.His personal approval rating is hovering at record lows My fight is entering a new phase, but it is far from over."Ms Leavitt was 27 when she stepped into the role at the beginning of Mr Trump's term last year, making her the youngest press secretary in US history