The Civil Union bill has divided Labour's caucus, and United Future leader Peter Dunne is crowing that up to 20 of its MPs may vote against it on its first reading. Dunne, who has led a taxpayer-funded media campaign against the bill, says that opposition from National and NZ First MPs is overwhelming, and that the bill may not survive its first reading. Associate Justice Minister David Benson-Pope confirmed that there was opposition within the Labour caucus, but denied that it was as many as 20 MPs. He believes support for the Civil Union and accompanying Omnibus bill will increase once people see what it does. The bill will be tabled next Monday, with first readings three days later on Thursday 24 June.