US Vice President Kamala Harris’ aides expect and have been preparing for the possibility that Donald Trump will attempt to declare victory prematurely, CNN reports.

They have been developing options for responses, but what they will ultimately do will be driven by how and when the former president acts. Two Harris advisers told CNN that they will not allow Trump’s claims to go unanswered. The campaign plans to be “very aggressive” about this, one aide told CNN.

Harris is prepared to speak tonight and the expectation is that she will deliver some remarks whether the outcome of the race was known or not. However, aides cautioned that those plans could change.