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⁷² Except for the casualty measure and the interactions with the weak party measures, all other measures are held at their mean, median or modal values depending on whether the variable is continuous, ordinal or categorical.

⁷³ The same pattern that emerges for weak Liberal Democrats in terms of a positive shift in incumbent voting also exists for the Plaid Cymru, Scottish National Party and Green Party identifiers. These figures are available from the author upon request.

⁷⁴ Sullivan, ‘Sustaining the Fight’.

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