The November elections are less than two months away, and Democrats have their backs against the wall. As he tours the country this week, President Obama is now pushing some Republican-sounding proposals for boosting the economy. Monday in Milwaukee, he was in campaign mode. Today, the pitch is going personal, from a president whose childhood included food stamps. In Cleveland, Obama unveiled some business-friendly proposals, including tax credits worth $100 billion for research and development, $200 billion in write-offs for capital investments and extension of most of President Bush’s tax cuts, along with $50 billion in spending on roads and bridges. But even some Democrats are asking, what took so long?