(RALEIGH) -- The gas-drilling process known as "fracking" will be authorized in North Carolina now that the General Assembly has overridden Gov. Beverly Perdue's veto of a bill that sets rules and regulations for the form of shale gas production. But one representative says she cast the deciding vote by mistake.

Mecklenburg County Democrat Becky Carney says when the time came to override the Governor's veto on fracking, she accidentally gave it the go-ahead. She told WTVD-TV she never meant to approve fracking.

"I pushed the green button instead of the red button. I voted against this bill when it was brought before the House and had every intention of voting against the override [Monday]."

Carney's "yes" vote made the tally 72-47 - just above the 60 percent majority required for the override. The chamber's operating rules prevent members from changing a vote if it affects the result; changing her vote would have reduced the majority below 60 percent.

Governor Perdue issued a statement after the override saying she hopes the General Assembly will revisit the issue of fracking.

The General Assembly's rejection of Gov. Perdue's veto on the fracking measure was one of three successful veto overrides in a marathon session of the State House and Senate, late Monday. Lawmakers also canceled Perdue's vetoes on North Carolina's $20.2 billion-dollar budget, and of an overhaul of the 2009 Racial Justice Act, which aimed to ensure capital punishment is free of racial bias.