On election night in 2008, I switched my channel on Rogers Cable to one of the Newfoundland stations before Rogers had a chance to black-out the signal. When the election coverage started in Newfoundland, the TV image became multiple freeze-frames with crappy audio. However, I was able to get a visual of what was happening in Newfoundland & Labrador and the Maritimes. At 15 minutes before the polls closed in Ontario, I changed the channel, and changed back to the Newfoundland station. The Rogers Cable block had worked.
If you are on Rogers Cable, turn to a Newfoundland or Atlantic Canada station first before the election night coverage starts. The video and audio will freeze. However, the freeze-frames will change every few seconds. You may see the results if you are lucky. Just do not change the channel, or that station will be blacked-out if you do return to it.