The referendum was called by President Traian Băsescu on 23 October 2007 when the Parliament of Romania failed to meet a deadline set by him to pass these changes.

[1] The precise question was: Do you agree that, beginning with the next elections that will be held for the Romanian Parliament, all deputies and senators be elected in single-member constituencies, based on a majority vote in two rounds?While the system proposed by Băsescu would mirror the French two-round electoral system, former National Liberal Party (PNL) Prime Minister Călin Popescu-Tăriceanu proposed a mixed member proportional system based on the German electoral system.

[2] The proposed legislation would also reduce the number of MPs by about 20 per cent.

[3] While the Greater Romania Party (PRM) challenged the legality of holding the referendum at the same time as the EP election, the Constitutional Court of Romania decided on November 7 that it was not illegal.

[4] Although 81% of voters were in favour of the proposal, the low turnout of 26% meant that the referendum was invalid.