Opposition Leader Bill Shorten has demanded a revised Coalition agreement between the Liberal Party and Nationals be made public, a day after Deputy Prime Minister Barnaby Joyce said the conditions should be kept secret.

On Sunday, Mr Joyce said the Nationals would "drive a hard bargain" with Mr Turnbull as the Coalition looked likely to scrape home with only 76 or 77 seats in the House of Representatives.

"The first aspiration is the agreement remains confidential," Mr Joyce said.