Cash donates to Liberal fighting fund

Innovation Minister Michaelia Cash is the latest MP to promise to donate to a fighting fund set up to get more Liberal women into parliament.

Victorian Liberal Kelly O'Dwyer, who is Minister for Women, set up the Dame Enid Lyons Fund with a $50,000 donation from her federal electorate conference.

Asked if she would also donate, Senator Cash said, "the answer to that is yes, but after discussions with my own state body, which is always appropriate".

Prime Minister Malcolm Turnbull will give $50,000, while Foreign Minister Julie Bishop also plans to donate.

Ms O'Dwyer said the fund would support Liberal women in marginal seats, or women standing in winnable seats, to make sure they have financial support behind their campaigns.

The donations come after assistant minister Jane Prentice on Saturday lost a pre-selection battle against her former staff member Julian Simmonds, sparking a debate about the number of women in the Liberals.