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US vice-president JD Vance has announced a new memoir centred on his conversion to Catholicism, adding to mounting speculation about a potential 2028 presidential run.

The book, titled Communion: Finding My Way Back to Faith, will be published on 16 June by HarperCollins and is described as “a spiritual exploration of what it means to be a Christian across the seasons of Vance’s life”.

In a post on X, Vance said he had been working on the project “for a long time” and described it as an account of rediscovering religion: “Communion is about my personal journey and how I found my way back to faith.”

According to the publisher, the book discusses Vance’s loss of faith and eventual return to Christianity. Vance converted to Catholicism in 2019 when he was 35, after being raised in a loosely evangelical family. His book, said the publisher, “reveals how his faith guides his work in public life, and how it informs his vision for the future”.