Presidential candidate and Illinois Senator Barack Obama spoke Monday to a crowd of nearly 4,000â??more than half of whom were UW studentsâ??at the Monona Terrace and emphasized achieving change and hope if elected president in 2008. Obama urged the crowd, from the moment he started his speech, to get involved and take an active interest in the government. He claimed the Bush Administration has failed the country miserably during its tenure and said the whole governmental system needs to be changed.