The ruling Social Liberal Union of left-wing prime minister Victor Ponta suspended Mr Basescu on Friday saying he had overstepped his powers.
An impeachment referendum will take place on July 29.
An opinion survey conducted by pollster IMAS for local radio station Europa FM at the weekend showed 64.3 per cent of Romanians would vote to impeach Mr Basescu, who is widely unpopular for backing austerity measures, including salary cuts and a rise in VAT.
