Tim Pawlenty, the Republican governor of Minnesota often mentioned as a possible running mate for John McCain, urged GOP candidates to act more like Democrat Barack Obama. "Say what you will about Barack Obama," Pawlenty said today, "people gravitate when you have something positive to say. … People want to follow hopeful, optimistic, civil, decent leaders. They don't want to follow some negative, scornful person." (More Tim Pawlenty stories.)