Yet again this morning, David Cameron was interviewed about a speech on the EU he still hasn't given. Asked on the Today programme whether the over-hyped address had been completed, Cameron said it was "finished and ready to go" (subsequently amending this to "largely finished").
Once again, he said that he would seek to reach a "new settlement" with the EU before seeking the "consent" of the British people for the changes, a clear promise of a referendum. In his speech, which is now due to be delivered on 23 January (having been pushed back from 22 January in order to avoid clashing with celebrations to mark the 50th anniversary of the Élysée Treaty  between France and Germany), Cameron will say that after the next election, a Conservative government would seek to repatriate significant powers from the EU before offering the voters a choice between the new terms and withdrawal.
As such, a referendum is now viewed by most as inevitable. Yet this pledge is dependent on an outcome that increasingly few believe is likely: a Conservative majority at the next election. A reformation of the coalition would likely scupper any plans Cameron has to bring back major powers from Brussels. In addition, it is unclear how Cameron will respond if he proves unable to secure the changes he wishes to see. This morning, he simply told John Humphrys: "I'm confident we will get the changes that we want, we'll have a new settlement and then we'll put that to the British people." Given the obstacles to a referendum, it is surprising how many now speak as if it is a certainty.
Neither Labour nor the Liberal Democrats will immediately match Cameron's pledge to hold an EU referendum, both arguing that it makes no sense to discuss a public vote until the eurozone crisis has been resolved. However, it is also true that they are unlikely to allow Cameron to go into the 2015 election as the only party leader willing to offer the public a say on Europe. The Lib Dems have previously supported  an in/out referendum, while senior Labour figures, including Jon Cruddas and Jim Murphy, both argue that a vote should be held at some point in the future. In all probability, then, an EU referendum is coming. But no one should assume it will be Cameron who holds it.