“This is all about him being a bully and a punk,” he said in an interview Friday.

“I wanted to punch him in his head.”

Sweeney had just risked his political neck to support the governor’s pension and health reform, and his reward was a slap across the face. The governor’s budget was a brusque rejection of every Democratic move, and Sweeney couldn’t even get an audience with the governor to discuss it.

“You know who he reminds me of?” Sweeney says. “Mr. Potter from ‘It’s a Wonderful Life,’ the mean old bastard who screws everybody.”

This is not your regular budget dispute. This is personal. And it could have seismic impact on state politics.