One way is to call your legislator's office.
Email is a second method.
Email is most effective if it is not a blanket mailing to all members, but a specific mail message to your representative or senator. When sending an email, remember to include your name, postal address and phone number. The best way to get a legislator's attention is with a short, well-reasoned letter. Make sure you understand the legislative process . Identify the issue at the top of the letter and cover only one issue per letter.