Pennsylvania Gov. Tom Wolf has rejected a Congressional map proposal submitted to him Friday by the state's top Republican legislative leaders.

Wolf said by his team's analysis, the GOP proposal does not meet his standards for fairness.

"The analysis by my team shows that, like the 2011 map, the map submitted to my office by Republican leaders is still a gerrymander," the governor said in a statement.

"Their map clearly seeks to benefit one political party, which is the essence of why the court found the current map to be unconstitutional."

Wolf could now submit his own proposal for new lines for Pennsylvania's 18 seats in the U.S. House of Representatives directly to the Pennsylvania Supreme Court, though the statement stopped short of saying that.

The state's current Congressional lines were ruled unconstitutional by the court last month.

Barring some kind of 11th-hour agreement at the Capitol, the court has declared its intent to impose a new set of Congressional maps by next Monday for use in the primary.

There is still a narrow window for direct negotiations between Wolf and legislative leaders.

They also could conceivably buy more time for themselves to strike a middle ground by agreeing to move the May 15 primary date to later in the spring.

But barring that, the court has reserved the right to impose lines for the May 15 primary.

The ongoing controversy stems from a challenge brought against Pennsylvania's gerrymandered Congressional lines last year by 18 Democratic voters from around the state who alleged the current maps - in use since 2011 - violate the state Constitution's guarantee of "free and equal" elections.

The court found in the plaintiff's favor by a 5-2 majority.

A second, 4-3 majority held that new maps should be put in place in time for this spring's primary.

As the elections calendar now stands, Congressional candidates are scheduled to start gathering voter signatures needed to gain positions on the primary election ballots by Feb. 27.