WASHINGTON — There may be one more Clinton on the presidential campaign trail next fall.

Chelsea Clinton, the only child of former President Bill Clinton and former Secretary of State Hillary Clinton, announced Monday that she is expecting her second child next summer.

“Charlotte is going to be a big sister! Feeling very blessed & grateful this holiday season,” Chelsea Clinton wrote on Twitter.

Chelsea Clinton, 35, and her father have largely stayed off the campaign trail since Hillary Clinton launched her Democratic bid for the presidency in April.

Both have said they plan to intensify their public political roles after the New Year in an effort to boost Clinton’s campaign just six weeks before the first round of primary voting.