A more thorough explanation:

A designating petition is a type of document that is used to nominate a candidate for a political party. It is used during primary elections or for election to a party position.

For example, if a person wants to run for a political office as a member of a political party, they need to gather a certain number of signatures on a designating petition to be eligible to appear on the primary ballot.

Another example is when a political party wants to elect a new leader or fill a vacant position within the party. They would use a designating petition to nominate a candidate for the position.

Overall, a designating petition is an important document in the political process as it allows for the nomination of candidates and the selection of party leaders.