Heart Health: Symptoms of Heart Disease and Heart Attack Heart attacks symptoms vary greatly for men and women, from anxiety and fatigue to nausea and sweating. Causes of Chest Pain. Angina Angina is chest pain due to inadequate blood supply to the heart.
In some presidential elections, superdelegates can play a major role in determining the Democratic nominee. Unlike delegates, superdelegates are not bound to represent the popular vote of a region at the Democratic National Convention; they are free to support any candidate for the nomination. The Republican Party does not have superdelegates.
Though sometimes referred to as unpledged delegates, many superdelegates pledge allegiance to a candidate well before the party convention -- but they are free to change their minds. Superdelegates make up around 20 percent of the total delegates and have only been around since the 1980s.