In addition, musicians with ties to the Republican party also play at the event. This is a political rally - most everybody in attendance supports the Republican party in one way or another, and the speakers/musicians are staunch supporters of the party.
Your nephrons filter these substances out of your blood and then reabsorb some of them back into your blood. This keeps your blood composition constant. Excess water and waste products are then secreted as urine. Your kidneys vary the amount of a substance that is reabsorbed into the blood or secreted as urine.
When you drink water, it is absorbed through the lining of the small and large intestines into your blood. This absorption occurs at a rate that depends largely on how much water you need at that time. Your body uses the concentration of certain elements to keep track of how much water is in the blood and tissues.