President Obama has finally taken a more populist tone on the economy by proposing that the TARP money given to the financial institutions in the midst of crisis be repaid by a special tax on large banks. It’s a good start, but only a start. What matters is how this plays out over the next few weeks and whether or not it catches on. Less obvious, however, is that support of this approach is going to be good politics for everyone as we head into an election year, Democrats and Republicans alike.