This convention marked the beginning of fourteen years of party unity and stability that allowed it to reach its best electoral performances of the 20th century.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request. ### Instruction: List the MITRE techniques contained in the text. ### Input: This convention marked the beginning of fourteen years of party unity and stability that allowed it to reach its best electoral performances of the 20th century. ### Response: .