Turnbull, Bishop to attend NSW fundraiser

As leadership speculation continues, Malcolm Turnbull and Julie Bishop will jointly attend a Liberal fundraiser in Sydney over the weekend.

Malcolm Turnbull and Julie Bishop will jointly attend a Liberal Party fundraising event on Sunday. (AAP)

Malcolm Turnbull and Julie Bishop are the joint special guests at a Liberal Party fundraising event in Sydney on Sunday.

The brunch at the historic home Rosemont, in Woollahra, comes as Liberal MPs consider whether to back Mr Turnbull in a coup against Tony Abbott while keeping Ms Bishop as deputy leader.

Mr Turnbull and Ms Bishop have publicly expressed their support for the prime minister.

But a number of backbenchers are agitating for a spill when MPs return to Canberra next week for the first parliamentary session of the year.

Rosemont is the eastern Sydney home of Lady Margot Burrell, in Mr Turnbull's electorate of Wentworth.

Lady Burrell is a generous supporter of charities and other organisations.

Mr Turnbull's office said the fundraiser had been organised for months.

A number of NSW government ministers, who face an election on March 28, are also expected to attend the $100 a head event.