How 'close' the election seems; if voters believe the election is close, they believe their vote will matter and so are more likely to vote - this was seen in the 79% turnout at the February 1974 election between Harold Wilson and Edward Heath.
If elections are 'foregone' conclusions; voters assumed Labour would win in 2001 due to 'hapathy' so were less likely to vote.
Importance of an election's outcome.
Why is turnout declining?
Widespread disillusionment among the young; increased tuition fees made young voters feel helpless about politics.
The young have alternative ways of political participation; e-petitions, direct action, and social media campaigns.
Younger voters more interested in single-issue campaigns.
Is turnout increasing again?
Since 2014; Labour, Liberal Democrats, and Greens have reported a rise in youth membership.
Estimated that 75% of Scottish 16-17 year olds voted in the 2014 Independence Referendum.
In 2017, 54% of 18-24 year olds voted - perhaps due to energy created by Labour.
Impact of age on voter turnout
Younger voters are more reluctant to vote.
In 2005, only 37% of 18-24 year olds actually voted compared with over 70% of the oldest age groups.
However, in 2017; Labour's vote share rose by 10% due to an increase in young voters.
Impact of class on turnout
Members of AB social class are much more likely to vote than members of DE social class.
In 2015 - 75% of AB voters voted compared with 57% of DE voters.