Research your legislators. Identify your bill or issue clearly. Whenever you get a chance to lobby elected officials, don't just refer to your effort by the bill number. And always make it clear whether you are asking for their support or opposition to the matter. During the legislative session, constantly check your bill's status.
Most legislative entities have a bill status information office.
At certain times, action occurs quickly and with little notice. Keep things friendly. Maintain a positive relationship with all legislators - they may be in this office or a higher one for decades. Threats and hostile or sarcastic remarks are not productive. Do not create any enemies.