2004 Ukrainian Constitutional Changes
As part of the Orange Revolution, the Ukrainian constitution was changed to shift powers from the presidency to the parliament. This was Oleksandr Moroz's price for his decisive role in winning Yushchenko the presidency. The Communists also supported these measures. These came into effect in 2006 during which Yanukovych's Party of Regions won the parliamentary election, creating a coalition government with the Socialists and the Communists under his leadership. As a result, President Viktor Yushchenko had to deal with a powerful Prime Minister Viktor Yanukovych who had control of many important portfolios. His premiership ended in late 2007 after Yushchenko had succeeded in his months-long attempt to dissolve parliament. After the election, Yanukovych's party again was the largest, but Tymoshenko's finished far ahead of Yushchenko's for second place. The Orange parties won a very narrow majority, permitting a new government under Tymoshenko, but Yushchenko's political decline continued to his poor showing in the 2010 presidential election.
On 1 October 2010, the Constitutional Court of Ukraine overturned the 2004 amendments, considering them unconstitutional.
Read more about this topic: Orange Revolution