Election-atlas.ca is an online atlas of federal and provincial election results in Canada. At the federal level the maps go back as far as the 1925 general election; provincial election maps go back as far as the late 1960s or early 1970s. Poll-by-poll results are available for the most recent elections.
This is a huge resource, all the more impressive given the scope of the data and the fact that it seems to have been done by just one person: J. P. Kirby, a self-described “regular guy interested in politics and elections. I’m also a map geek.” (Naturally.) What I like best is that the atlas shows the historical electoral district boundaries for each election, which is fascinating on its own but must have taken some digging on Kirby’s part. (Also kind of weird to see early 20th-century results overlaid on a modern, OSM-based map with airports and freeways and so on.)
The New York Times’s graphics department generally does very good election maps, and their work on yesterday’s gubernatorial election in Virginia is no exception. I particularly like how the interactive map toggles from a standard choropleth map to maps that better account for population density, show the size of each candidate’s lead and the shift in vote since the 2016 presidential election.
A quick tour around European news sources this morning turned up few, or small, maps of the results of yesterday’s federal election in Germany. (At least so far: it’s only been a day, and I wasn’t very thorough.) I’ve mostly seen graphs and other infographics being used to show the results: see ZDF’s gallery. But yesterday Maps Mania found the Berliner Morgenpost’s live map of the results, which presumably was being updated in real time yesterday. German elections are a little complicated, so the map has a number of tabs showing various aspects of the results: first (constituency) and second (party) votes, who came second or third, where various parties got the bulk of their support and so forth.