A leaked document reveals what Federal Government MPs have been told to say in response to questions about Cabinet's agenda.

Key points: Email with government talking points leaked

Email with government talking points leaked Outlines ways to promote Coalition policies

Outlines ways to promote Coalition policies MPs told to say Cabinet functioning "exceptionally well"

MPs told to say Cabinet functioning "exceptionally well" Comes as Senate leader calls leaks "gutless"

The email containing "talking points" for Government MPs suggests they say "our Cabinet is functioning exceptionally well" if asked about recent leaks from Coalition meetings.

Earlier this week Prime Minister Tony Abbott warned there "would be consequences" for ministers who leaked or spoke out against government policy.

His comments followed several leaks revealing division within Cabinet and across the party about same-sex marriage, how an internal debate on the issue was handled and the Cabinet's agenda.

But now there has been another leak, this time of a daily briefing note circulated across government.

It outlines attacks on Labor and ways to promote the Coalition's new policy of limiting court action by environmental activists.

The document's instructions include "if asked" about the Cabinet agenda, to respond by saying:

"We don't comment on Cabinet discussions. "In contrast to the experiences of Rudd and Gillard governments, our Cabinet is functioning exceptionally well."

It also suggests ministers say:

"Everyone knows that under Labor, cabinet submissions were almost never lodged on time. "Our Cabinet processes are far more effective and productive than Labor's chaos."

Labor raises leaks in Question Time

Labor seized on the latest leak, using it to attack the Prime Minister in Question Time.

"Can the Prime Minister confirm that Cabinet is functioning so exceptionally well that Cabinet ministers immediately leaked this document?" Bill Shorten asked.

Mr Abbott hit back.

"What I'm not going to do is accept lectures on Cabinet solidarity from the Leader of the Opposition who backstabbed two prime ministers," he said.

"Twice this leader of the Opposition led the Sussex Street death squads to assassinate — politically — two prime ministers."

Sorry, this video has expired Government leaks 'gutless' says Abetz ( Michael Brissenden )

Mr Abbott was not the only one fuming about the leaks.

The Government's Senate leader Eric Abetz earlier called it "gutless", reminding colleagues: "It's a breach of the rules.

"Every now and then you have these breakouts, which are unfortunate."

Backbencher Ann Sudmalis, who holds the marginal seat of Gilmore, castigated her colleagues for their behaviour.

In a meeting of all Coalition MPs and senators, she spent five minutes berating ministers for what she saw as the debacle after the same-sex marriage debate last week.

She said Cabinet ministers were sacrificing people in marginal seats for the luxury of expressing their own views in public, and called for "unity".

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