Consumer Involvement refers to the level of importance a consumer places on a purchase. The consumer factors in the personal, social and economic significance of the product before going ahead to make the purchase. The levels of consumer involvement could be of three types, namely; low, medium and high involvement.
A low involvement purchase is one in which the consumer does not give so much thought to before making the purchase. Example is household products like detergents. Medium Involvement purchase are those in which the consumer puts in some thought before acquisition. An example could be new clothes. High Involvement purchase require considerable thought and research before the purchase is made. An example could be a new car.
I would say in these cases where candidates are being seen at disaster sites or orphanages for example, they are attempting to catch media attention for their apparent humanitarian qualities and thus garner support amongst the voters.