'Worst day of my life'... Senator Ian Macdonald.

'Worst day of my life'... Senator Ian Macdonald.

Queensland LNP senator Ian Macdonald says he has been dropped from Tony Abbott's frontbench, calling it ''one of the worst'' days of his life.

All eyes will be on Mr Abbott on Monday as he names his cabinet, having vowed to keep the team that he won the federal election with.

However Senator Macdonald said on Sunday: ''What should have been one of the proudest days of my life has turned into one of the worst. The ecstasy of a new government and success in the north has turned a little sad with a phone call from Tony Abbott saying he has no room for me in the new ministry.''

Such was his disappointment, the Senator said that he would turn off his phone and withdraw from social media and take a break after a ''very strenuous nine months''.

''For the moment, I think it best if I turn off my phone and Facebook,'' he said.

''Sorry I will be uncontactable for a couple of days.''

Senator Macdonald apologised to his constituents, his supporters, his staff and his wife saying, ''I feel I have let you all down''.

Senator Macdonald served as shadow parliamentary secretary for northern and remote Australia, and as shadow parliamentary secretary for the defence force and defence support while in opposition.

The senator from Queensland has been elected for another six years to the Senate.

While expressing his disappointment at being dropped from the Abbott frontbench, he said he would continue to support Mr Abbott from the backbench.

Teresa Gambaro, Andrew Southcott and Don Randall, who all served as shadow parliamentary secretaries, have also missed seats on the frontbench.

Veteran MP Bronwyn Bishop has the backing of Mr Abbott to be Parliament's Speaker.

Mr Abbott began calling colleagues on Sunday night to offer cabinet, ministerial and parliamentary secretary posts. The swearing in of the new cabinet is due to take place on Tuesday or Wednesday.

- AAP with Marissa Calligeros