Why would a party steal the policies of another during an election?

A party may steal the policies of another during an election to attract undecided voters or to capitalize on popular ideas that resonate with the public. By adopting successful policies, they can appear more appealing and credible, potentially drawing support away from their competitors. This strategy can also help mitigate criticism and showcase a commitment to addressing pressing issues. Ultimately, it aims to enhance their chances of winning by aligning with voter preferences.