Here is what their website says about their 'widget'
Hubdub's Election Map is different - it's not a poll. It's based on 51 underlying prediction markets that respond in real-time to breaking news, so the forecasts are continually updated.
Click on any state to see its interactive prediction market, or scroll down to make your predictions state-by-state.
The total Electoral Count is constantly updated based on the current standing in each state.
Here's the widget.