Kansas Democrats are circulating a petition for a special session of the legislature to fix school funding.

The Kansas Supreme Court ruled last month the legislature's proposed budget for schools is unconstitutional.

Sen. Anthony Hensley and Rep. Tom Burroughs, the Senate Minority and House Minority Leader respectively, wrote a letter to Gov. Sam Brownback Saturday, saying they are circulating a petition for a special session of the legislature.

Hensley and Burroughs wrote in the letter they are invoking Article 5, Section 1 of the Kansas Constitution, which requires the governor to call the legislature into special session upon petition signed by at least two-thirds of the members elected to each house. The letter says signatures are already being collected.

The letter says Brownback is attacking the Kansas Supreme Court for doing its job and upholding the state constitution.

"Your inability to lead - and your Republican allies' refusal to do their constitutional duty - has put Kansas on the brink of a constitutional crisis," the letter says. "It is time to move past these failures, come together, and find a solution to equitably fund Kansas schools."