Open primary. All voters can take part in an open primary and may cast votes on a ballot of any party. The party may require them to express their support to the party's values and pay a small contribution to the costs of the primary. United States. In the United States, other types can be differentiated: Closed primary.
When it declines in menopause, it can lead to irregular periods. During anovulation, which is common with irregular periods in menopause, progesterone is not produced. This can lead to estrogen build-up. As production of these two hormones so integral to the menstrual cycle begins to decrease prior to menopause, periods are usually affected. Before decreasing to a constant low level, estrogen and progesterone levels will often fluctuate wildly and cause irregular periods.
An alteration in the level of estrogen or progesterone may result in a late menstrual cycle. Hormonal imbalance may also occur due to a change in the diet, or due to stress. Polycystic ovarian syndrome is one such instance of hormonal imbalance that may cause the periods to get delayed.tress. Periods may get delayed also because of stress, both physical and emotional. So, it is important that the cause of stress is determined and cured. If the level of stress in the body goes down, it may lead to a resumption of the menstrual cycle.