Low Deficits Don't Prove That More Spending Is Needed
Over the last few years, the Republican Congress and Barack Obama have done a decent job of bringing down the immense deficits created by the recession and the President Obama's own response to it. The federal deficit is now "only" $468 billion dollars for 2015. The deficit will continue to fall, mostly because of increased taxes, until 2017 - at which point it will start to grow larger, forever.
As Veronique de Rugy writes at the Mercatus Center:
The CBO projects the deficit to begin rising again in fiscal year...