Michele Flournoy, a politically moderate Pentagon veteran, is regarded by U.S. officials and political insiders as a top choice for the position…

Democrats have long sought to name a woman to the top post in a department that didn’t open all combat jobs to female service members until about five years ago. Flournoy had been the expected choice of Hillary Clinton if she had won the 2016 election. Her name surfaced early as a front-runner for Biden’s Cabinet, said officials who spoke on condition of anonymity to discuss personnel matters.

Seen as a steady hand who favors strong military cooperation abroad, Flournoy, 59, has served multiple times in the Pentagon, starting in the 1990s and most recently as the undersecretary of defense for policy from 2009 to 2012. She serves on the board of Booz Allen Hamilton, a defense contractor, which could raise concerns from some lawmakers. But her moderate views would likely ensure wide bipartisan support in a position that requires Senate confirmation.