All of the following factors contribute to the need for the amendment except number one some 18-year-old wanted to ask inside the right to vote two before 1964 some State prohibit citizen who could not pay a tax from voting three before 1961 resident of Washington DC could not vote in national election for the US Constitution had no authority over the states five lawmaker considered the right to vote and important one in a democracy

The statement that does not contribute to the need for the amendment is "number one some 18-year-old wanted to ask inside the right to vote." This statement is not clear and does not provide any relevant information towards the need for the amendment. The other four factors listed do contribute to the need for the amendment.