From CBS News' Maria Gavrilovic:
DUNCANVILLE, TEXAS -- At a town hall meeting in a suburb of Dallas, Barack Obama assured voters that he will do his best to implement his campaign promises if he wins the presidency. He argued that his record of public service is an indication of what kind of president he will be.
"It wouldn't make sense for me to run and then suddenly act completely different from what I was doing over the course of years," Obama said.
He said that his record in the Illinois Senate and U.S. Senate are examples of his experience and a guide for his future decisions. "At every point in my career I have fought for working families, I fought to give health care to people who didn't have them. I fought to give tax breaks not to people who are rich but people who need them," Obama said.
"My track record is of service."
Obama also argued that he is obligated to voters and not to lobbyists and special interest groups. "I don't take money from federal lobbyists so I was never funded by the special interests, I was funded by you. So I don't have any string attached to me. The only people I owe are you."