(CNN) The election overseer for a critical county in Florida confirmed to CNN on Sunday what observers in both parties had begun to predict: There is no way Palm Beach County's machine recount will be finished by the Thursday deadline.

"It's impossible," said Palm Beach County Supervisor of Elections Susan Bucher in response to CNN asking if officials would be able to finish the full recount on time.

The prediction came as a rare point of agreement between Democrats and Republicans in the state, who have engaged in a tense fight since Tuesday's election brought tight margins in statewide races.

Sarah Revell, the communications director for the Florida Department of State, told CNN's Ana Cabrera that if a county does not submit its results by deadline, "then the results on file at that time take their place," she said.

Revell added that Florida law does not give the secretary of state the authority to grant extensions.

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