I was listening to CNN's "State of the Union," today. The journalist was discussing the 2016 election and the challenge the Republicans will have given the inevitable march of demographics etc. (Often I think CNN just takes the Democratic party talking points and runs with it).
It was pointed out if you start with the electoral map of 2012 the Republicans only need to switch Florida, Ohio, Virginia and Colorado to pick up enough votes to win the Presidency. The next five minutes was spent discussing why that is so hard to achieve.
Here's the results of the House elections in 2014, admittedly a low-turnout election compared to Presidential elections, in each of those states. Source is fec.gov.
And as far as the inevitability of demographics: In 2012 about 17% of the US population was classified by the Census department as Hispanic. Wikipedia has this helpful chart.
Florida 23% Hispanic
Colorado 21% Hispanic
Virginia 8.4% Hispanic
Ohio 3.3% Hispanic.
If that Hispanics = Democratic victory is true, how does it explain the 2014 election results in Colorado and Florida, with greater than average Hispanic populations?