WHAT'S HAPPENING IN FEDERAL PARLIAMENT THIS COMING WEEK:
* Treasurer Josh Frydenberg to deliver his first federal budget on Tuesday night.
* House of Representatives to sit Tuesday to Thursday.
* Senate to sit Tuesday and Wednesday, but go into budget estimates hearings Thursday and Friday.
* Opposition Leader Bill Shorten to deliver his budget reply speech on Thursday night.
* Labor and coalition party rooms to meet on Tuesday morning.
* Expected to be final parliamentary week before a May 11 election.
* Three senators - Wendy Askew (replacing Tasmanian Liberal David Bushby), Raff Ciccone (replacing Victorian Labor's Jacinta Collins) and Duncan Spender (replacing NSW Liberal Democrat David Leyonhjelm) - to be sworn in. First speeches scheduled for Thursday.
* Labor to seek endorsement for a parliamentarians code of conduct on race and cultural issues.
* Senate will endorse a bipartisan motion censuring senator Fraser Anning for his "inflammatory and divisive comments" extending blame to Muslim migrants over the Christchurch massacre, and calling on all Australians to "stand against hate".
* Both houses expected to hear Christchurch massacre condolence speeches.
* Labor to seek disallowance of regulations banning long-term casuals claiming an annual leave entitlement.
* Inquiry reports due on: political interference in the ABC; cashless welfare card; resource tax changes; abuse royal commission redress scheme; quality of checks on aged care homes; national integrity commission laws.
* Valedictory speeches expected during the week
* Legislation for budget appropriations, north Queensland floods relief, instant asset write-off for business, veterans, foreign influence transparency scheme and resource taxation.
