What Were the Decisive Factors Determining the Outcome of the 2001 General Election (UK)?

There were many factors contributing to the outcome of the 2001 general election, some more important than others. The decisive factors include media influence, dealignment, tactical voting, the leadership of parties, the performance of the government, the party's campaign and issue/judgmental voting.
The media is an important factor in elections as it has influence over the voting public. It has become particularly more influential as traditional support for certain parties has weakened and people are more open minded and susceptible to persuasion. …