Washington PostTim Kaine is sitting pretty in Hillary Clinton's veepstakesWashington PostIf Hillary Clinton had to pick her vice presidential running mate today, I think she'd pick Virginia Sen. Tim Kaine. Here's why. The defining trait of Clinton's political career is caution. She doesn't ever leap before she looks -- and looks and looks ...GOP insiders: Kaine is strongest VP pick for ClintonPoliticoPoll: Picking Franken wouldn't boost Clinton's chancesSt.