A letter from state Treasurer Andrew Eristoff to Democratic leaders says Christie is unable to sign the $30.6 billion budget the Legislature is expected to pass Wednesday because it's unbalanced.
A copy of the letter was obtained late Tuesday by The Associated Press. The letter urges Democrats to close the gaps.
Democrats call the letter "ridiculous." They say it's a sign Republicans "are panicking over the prospect of opposing a responsible budget."
The Democrats' budget for the fiscal year that starts Friday is about $1 billion higher than the one Christie proposed in February. It assumes revenue the governor says isn't guaranteed.
The state constitution requires a balanced budget be in place by July 1.