FACTBOX - Elections in Scotland, Wales and England

(Reuters) - Voters go to the polls in England, Scotland and Wales on Thursday in elections seen as a test of the popularity of Prime Minister Tony Blair's Labour Party.

Here are some facts about the local elections. Polling runs from 7 a.m. to 10 p.m.

SCOTLAND

* Elections will be held for the Scottish parliament and all local councils.

* Scottish parliament has 129 members: 73 constituency members are elected by a first-past-the-post system and 56 regional members elected by proportional representation.

* Labour has 50 seats, the Scottish National Party 25, the Liberal Democrats and Conservatives 17 each. The remaining 20 are made up of Greens, Socialists, Independents and others.

* Following devolution in 1998, Scotland now decides on matters such as education, health, justice and the environment. Britain's parliament in London still deals with matters such as the economy, foreign affairs, defence and national security.

* In Scotland, 1,222 seats in all 32 councils are up for grabs. For the first time, a single transferable voting system will be used. This is a form of proportional representation and analysts say it may result in fewer Labour-controlled councils.

* Turnout at Scottish parliamentary elections in 2003 was 49 percent, down from 58 percent at the first vote in 1999.