The cards were allegedly distributed to children at the Cisarua Refugee Learning Centre by people who reportedly trespassed onto school grounds.
"The Nationals have taken a position that is vastly out of step with Australians."
Lehrmann stands accused of raping Brittany Higgins in Parliament House in March 2019.
A man of the people.
Greens leader Adam Bandt accepted Thorpe's resignation, saying the senator had made a "significant lack of judgement."