I disagree with your reasoning. Placing the party in a category is an editorial decision, not a research decision, and should only be made if the issue is beyond dispute. The article itself, in Citizens Electoral Council#Platform, would appear to contradict the category. If there is a published opinion that says the party is right wing, it should be included in the body of the article. But even if someone strongly desires to categorize the party as right wing, it should not be done if there is any doubt.