You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Kenya

Context:
The election held in 1988 saw the advent of the mlolongo (queuing) system, where voters were supposed to line up behind their favoured candidates instead of a secret ballot. This was seen as the climax of a very undemocratic regime and it led to widespread agitation for constitutional reform. Several contentious clauses, including one that allowed for only one political party were changed in the following years. In democratic, multiparty elections in 1992 and 1997, Daniel arap Moi won re-election.

Question:
What did mlolongo system lead to?

agitation for constitutional reform