A string of big-money fundraising events which featured Malcolm Turnbull as the star attraction will be cancelled or postponed, as Liberal officials raise concerns that any imminent federal election will leave a cash-strapped party exposed.

The poor fundraising of some federal MPs is emerging as such a major problem that NSW Liberal president Philip Ruddock has threatened to "name and shame" electorates which are falling significantly short of contributions to the federal election effort.

Mr Ruddock, who singled out the best fundraisers at a major party event in late May, is understood to have threatened local electorate presidents if the situation continued, two sources with a detailed understanding of the issue told the Herald.

But Scott Morrison, who will become the next prime minister after defeating former home affairs minister Peter Dutton in a party-room ballot on Friday, has been widely praised as an excellent fundraiser whose own branches are well ahead in their federal election contributions.