The war between the Hillary Clinton and Bernie Sanders campaigns over a data breach that led to the firing of one Sanders aide escalated in the minutes ahead of Saturday night's debate in New Hampshire, with a Sanders adviser sending a tweet mocking Clinton's record on the Iraq War.

When I said a fired staffer made a "mistake," I meant it in the same way @HillaryClinton did about the Iraq war. https://t.co/aP3fvW576o

— Tad Devine (@taddevine) December 20, 2015

Tad Devine, a political consultant who's advising the Sanders campaign, linked to a story in which Clinton said her 2002 vote authorizing the Iraq war was a "mistake."

The Sanders campaign fired back at the Democratic National Committee for "trying to help the Clinton campaign" by revoking its access to the voter database.