Civil servants are racing to set up IT in preparation for the influx of new MPs expected after the election.
An unusually high number of MPs have stepped down this year - around 150, according to the Guardian - partly because of the expenses scandal.
"Emergency computer banks" have been set up for newcomers, although most will be given a laptop and a desk in a communal area until offices can be allocated.
Tomorrow will also be the first day of the new IT system dealing with MPs' expenses.
The Independent Parliamentary Standards Authority (IPSA) will come into operation, overseeing the expenses and wages of MPs.
It aims to increase transparency around the process, although has given no information so far on the technology it plans to use.
Gordon Brown said during the third leaders' debate, "In the future, MPs will no longer have any say over their expenses, pay or pensions. That will be for the IPSA to dictate and monitor."