It wasn't "under the radar" -- although it's obvious it was under your radar, ignorant buffoon that you are. Turnout was 33%, which is crazy high for an election like this. Tons of money poured in on both sides, and even Palin came out and stumped for Walker's boy. And conservative control of the WI Supreme Court was up for grabs.
The result? A 55%-28% primary edge for the incumbent in February became a 200-vote loss.
Also, your backhanded insult of the Tea Party as people who don't care enough about their country to get involved in the political process, or even vote, unless it's what you deem to be a "large" election is completely uncalled for. I hope you apologize to them.