National convention

This weekend I was able to watch the Democratic convention (re-run). Barack Obama seemed to touch up on all the issues concerning Americans today, such as the economy, oil (gas prices), healthcare, lessening taxes, and social security benefits for our generation. He did talk about other important issues concerning the black/Latino community and how we can improve the middle class. Listening to his speach gave me some hope for a better America, but it also arose a question in my head that led to insecurity. If elected, will he stick to his word and commit to it?