Senator Owens makes some assumption about the differences between men and women: he thinks that women have more good manners and that they love their homes and children. He also thinks that women choose candidates that are less likely to be corrupted, and they tend to promote laws that are greater for the community.
In his opinion, those differences only prove that women are suitable for voting just as much as men because their vote helps shapes better community both with the law they proposed and with the candidates they voted, which was the consequence of voting in Colorado.