Ever since Boris won the 2019 General Election, there has been growing talk of the need for a “progressive alliance” to stop the Tories winning the next election.
Quite what this might involve is unclear. Some would like a national pact between Labour, the Liberal Democrats, and the Greens so only one party would stand in each seat, and others want simply to promote greater tactical voting and other parties to scale back their campaigning where another party is the main challenger.
Helpfully, the by-elections in both Batley and Spen and Chesham & Amersham give us some insight into how this could work and how voters might react.
Chesham & Amersham: a victory for tactical voting
Let’s take Chesham & Amersham first, where the Liberal Democrats started in firm second place. We fought a vigorous campaign and proved early Green party claims that they were going to be the main challenger wrong. People who were traditionally Labour voters, realising that their vote could make a difference, decided to tactically lend their vote to the Lib Dems – including some Party members and activists.