Since 1900 the Democrats held the Presidency for more than two consecutive terms just one time. 1932-1948 Roosevelt, Roosevelt, Roosevelt, Roosevelt, Truman.
Since 1900 the Republicans held the Presidency for more than two consecutive terms just one time. 1980-1988 Reagan, Reagan, Bush.
I think it's pretty unusual for the American public to give the Presidency to the same party three times in a row.
This one is the Democrats to lose. The last one really was too... so don't count them out.