The bidding process for UEFA Euro 2012 ended on 18 April 2007, when a joint bid from Poland and Ukraine was selected as the host.
The organisation of the event was initially contested by five bids representing seven countries: Croatia–Hungary (joint bid), Greece, Italy, Poland–Ukraine (joint bid), and Turkey.
On 8 November 2005, UEFA's Executive Committee narrowed the candidates down to a short list of three:
On 31 May 2006, all three bids completed the second phase of the process. This was by submitting more detailed dossiers, before UEFA conducted site visits to candidate countries in September. The final decision was due to be announced on 8 December 2006 in Nyon, but this was postponed to "give bidding associations more time for the fine tuning of their bids".
The hosts were eventually chosen on 18 April 2007, in Cardiff, by a vote of the members of the UEFA Executive Committee. Owing to their affiliation with associations bidding to host the competition, two of its 14 members, namely Italy and Ukraine, were not permitted to vote. In the first of potentially two rounds of voting, each member had one vote (a total of 12 votes were therefore cast).
The Poland–Ukraine bid received an absolute majority of 8 votes, and was therefore announced the winner without requiring a second round. Italy received the remaining four votes, while the Croatia–Hungary bid failed to win any votes.
These cities were the original candidates of the winning bid:
Two more Polish cities, Kraków and Chorzów, were listed as reserve venues in Poland, while in Ukraine Odessa was a reserve city and the Olympic Stadium in Donetsk a reserve stadium.
Afterwards, there were some changes regarding the venues. The final decision was taken on the UEFA meeting on 13 May 2009.:Kharkiv replaced Dnipropetrovsk, while the mentioned reserve venues were turned down. The result was this: