The Common Interest in Action Score reflects the percentage of Common Interest in Action positions that a candidate supports. The Common Interest in Action takes positions when there is a consensus of two-thirds or more on a given proposal among the more than 100 members randomly assigned to review our policy brief for that issue.The Past Score reflects issues on which we took positions that have already been voted on by both the House and the Senate. The Future Score reflects positions that we have taken that have not yet come before both the House and the Senate for votes. The Past Score for incumbents is based on their actual votes. The Future Score for incumbents, as well as the Past and Future Scores for challengers, are based on candidates' answers to our questionnaire.