You read me use the term "economic security", which runs from raising the minimum wage to Obama'Care. Unmarried women tend to support these issues more than married women. Both groups of women seek economic security, but while married women have a partner to supply either a stable single-income, or an additional household income, the unmarried woman is alone. There is a degree of fear which plays into the single woman's thinking which motivates her to support government programs to compensate for a lack of a spouse.
In a vaccume this would be fine. For example, if only the people who voted for Obama had to pay into ObamaCare. However, these policies are damaging everyone. National healthcare is a bad investment to begin with, but women vote with their feelings, not with their calculator, so they will support harmful policies so long as they derive a feeling or security, even if it's false security, and even if they know it's false.
Generally speaking, person should have a healthy degree of control and security over their financial future before being allowed to vote, otherwise they will panic and vote their inadequacies into law and force the rest of us to pour our hard-earned assets into their insatiable character flaws.