Brown was hired to do one thing - not vote for Obamacare. The D’s had to do something else to get Obamacare passed, and that made Democrat House members vote for something they didn’t like, and the D’s in the House got crushed last month. When Brown was elected, many thought that would stop Obamacare. It didn’t, but many house D’s lost their seats because of Brown.
He votes with the GOP on defense and some tax issues which is great, but no one should ever have thought he was a real conservative.