_The 2007 treaty and its reforms _ such as more majority voting, the appointment of an EU president and foreign minister _ are voided for lack of unanimous ratification.
_The EU will soldier on with housekeeping rules crafted in 1992 that are seen as insufficient to run a bloc of 27 countries today.
_The EU will continue with a presidency that rotates to a new member country every six months and the European Parliament will not see its legislative powers increased.
_There will be little enthusiasm in EU capitals to start another EU reform drive.
If Ireland says 'Yes" on the Lisbon Treaty:
_There will be pressure on the Czech Republic and Poland to remove legal hurdles holding up the treaty's ratification there.
_A new European Commission will take office in January. An EU president will be named by the EU governments and an EU foreign minister will take office.
_ A range of EU issues such as judicial and police cooperation, education and economic policy will no longer require unanimous backing. A majority vote will suffice. However, Britain and Ireland will opt out of the EU's justice and police decisions. Unanimity will still be required in foreign and defense policies, social security, taxation and cultural issues.
_The EU will have a rights charter that covers freedom of speech and religion but also the right to shelter, education, collective labor bargaining and fair working conditions. Britain and Poland will opt out of this.
_There will be an EU treaty guaranteeing that Dublin keeps control over its military, tax and moral affairs, including its ban on abortion.