Below are my favorite (at the moment) electoral graphics pages. Some have maps, some have graphs, and some have charts — some of them have more than one type. They happen to be listed in the order that I have them loaded as tabs in a browser. I have the Presidential pages listed first, and the Congressional (mostly Senatorial) pages listed second, and, within each of those two categories, the pages are listed in some sort of nebulous subgroups order.
http://elections.huffingtonpost.com/pollster/2016-general-election-trump-vs-clinton
http://polltracker.talkingpointsmemo.com/contests/us-president-2016
http://fingfx.thomsonreuters.com/gfx/rngs/USA-ELECTION/010020L91F6/index.html
http://www.nytimes.com/interactive/2016/upshot/presidential-polls-forecast.html?_r=1
http://election.princeton.edu/wp-content/uploads/autographics/EV_histogram_today.png
[or] http://election.princeton.edu/todays-electoral-vote-histogram/
http://www.centerforpolitics.org/crystalball/2016-president/
http://cookpolitical.com/presidential/charts/scorecard
http://elections.dailykos.com/app/elections/2016/office/president
http://projects.fivethirtyeight.com/2016-election-forecast/
http://www.270towin.com/maps/consensus-pundit-electoral-map
http://www.270towin.com/maps/princeton-election-consortium
http://www.electoral-vote.com/
http://election.princeton.edu/wp-content/uploads/autographics/EV_map.png-white
[or] http://election.princeton.edu/electoral-college-map/
http://www.realclearpolitics.com/epolls/2016/president/2016_elections_electoral_college_map.html
http://talkingpointsmemo.com/election/2016/us-president
https://electionbettingodds.com/
https://iemweb.biz.uiowa.edu/graphs/Pres16_WTA.png
[or] https://iemweb.biz.uiowa.edu/graphs/graph_Pres16_WTA.cfm
https://iemweb.biz.uiowa.edu/graphs/Congress16.png
[or] https://iemweb.biz.uiowa.edu/graphs/graph_Congress16.cfm
https://electionbettingodds.com/congress.html
http://projects.fivethirtyeight.com/2016-election-forecast/senate/?ex_cid=2016-forecast
http://www.realclearpolitics.com/epolls/2016/senate/2016_elections_senate_map.html
http://talkingpointsmemo.com/election/2016/us-senate
http://www.electoral-vote.com/evp2016/Senate/sen_graph-2016.html
http://election.princeton.edu/wp-content/uploads/autographics/Senate_seat_history.jpg
[or] http://election.princeton.edu/senate-seat-history/
[Ordinarily I use multiple browsers — Opera, Iron, Chrome, Chromium, and Firefox — and each browser is used for a different topic area, each with a different bunch of pages — the URL’s above happen to be loaded into Iron, which functions as my “electoral trends browser”, I guess.]
I also put a page with all these links online — http://www.allgeektome.com/2016-electoral.html — I will maintain the page at least through the 2016 elections — please feel free to visit it any time until then.
EDIT: Anyone is free to save the above HTML page (“electoral.html”) to his/her hard drive, if desired.
If anyone has any other favorite pages, please feel free to suggest them in a comment.
For sanity’s sake, I don’t recommend obsessing over polls and/or electoral predictions, etc. [I personally check the above pages “only” on a daily basis — LOL.]