Which factor can significantly enhance a political leader's support during an election campaign?

A political leader's support during an election campaign can be significantly enhanced by the popularity of a former leader. When a party has a well-liked former leader, it can positively influence public perception and trust in the current candidate. Voters often draw connections between the past successes or favorable attributes of the former leader and the present leader, hoping for a continuation of effective policies or charismatic leadership. This legacy can create a sense of familiarity and security among the electorate, encouraging them to support the current candidate based on the positive associations formed by the former leader's tenure.