The article discusses how voters in elections may not always just support two candidates, but can back multiple challengers to defeat an incumbent. People use signals like opinion polls to decide how to vote strategically. Surprisingly, when more people vote strategically, it can actually reduce the need for others to do so. In close elections, voters are less likely to strategically vote. In the UK General Election of 1997, around 50 seats may have been lost by the Conservative party due to strategic voting.