The white girlfriends Obama erased from his past: How the President airbrushed his romantic history to burnish his credentials as a black leader

Blistering new biography studies Barack Obama's relationships with well-educated ex-girlfriends including Genevieve Cook and Alexandra McNear

President makes only fleeting references to former partners in his memoirs

Book by Pulitzer-winning journalist David Marannis paints unflattering picture of Obama's drive to be seen as a pioneering race warrior

Republican opponents are picking over inconsistencies between the Marannis book and Obama's own memoirs