So too in politics, where have a core vote - people who repeatedly and consistently support a party - is the crucial underpinning of sustained success. The absence of one, or more accurately the smallness of the Liberal Democrat one, is one of the continuing explanations through the party's various missed opportunities, setbacks and disasters of the last few years.
The worst Conservative general election result since the Great Reform Act of 1832 introduced democracy (sort of, men only) still saw the party poll in the low thirties. The worst Labour Party general election result since the party's rise early in the twentieth century still saw the party poll in the mid-twenties. And the worst Liberal Democrat result? Down in single figures.
The smallness of the current Lib Dem core vote leaves the party highly vulnerable in bad times, unable to weather a tough election with a goodly haul of MPs. The party is still, even after the 2017 seat gains, only one bad election result away from Westminster extinction.
But it is a problem too in good times. The smaller your core vote, the further you start from the finishing line in elections. Starting with a handicap compared to other parties makes winning harder. Even when wins are secured, they require yet more intense work to repeat - constraining the ability to spread out and win more because you still have to fight so hard to hold what you already have.
And then there is the hobbling effect of drawing in a wide range of transitory support. Now, winning over new support from many different places is a political virtue. As long as those new converts become, in at least reasonable numbers, sustained supporters. Just as a local party membership model where you recruit 100 new members and then promptly lose 100, stuck forever on an intensive treadmill of work going nowhere, is undesirable, so too a model of recruiting and losing votes in large numbers has serious issues. This was a burden even in the Liberal Democrat heydays, with huge churn in the party's support between general elections even when our vote was going up.
What was a burden in good times became something even worse in political difficult times, most notably the 2010 hung Parliament. When you have a diverse range of supporters, with few possessing a long-term attachment to the party, whatever decision you make in a hung Parliament is bound to end badly.
You may have issues with how Nick Clegg handled 2010, but imagine how grim it would also have been for Charles Kennedy in 2005 faced with a hung Parliament in which the Conservatives were led by Michael Howard, fresh out his dog whistling campaign on immigration, and a Labour Party led by Tony Blair, fresh out of Iraq. The only escape is to be so small in a hung Parliament that you do not have to choose (thank you, 2017).
That is why for sustained success the Liberal Democrats need to build a much larger core vote - one based on people who share our values being won over by the party's effective demonstration of them, creating long-term loyalty.
How can this be done? That's where the pamphlet I co-authored with former Cambridge MP David Howarth comes in, which in turn was followed up by a more detailed organisational plan. Happy reading!
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