Unless there is a major catastrophe within the next two years my prediction is a Democrat will be elected president.
The Democrat candidates will point to all the key economic indicators comparing now to how things were when Obama took office in 2009. Unemployment was almost at 10% , foreclosures were at record highs, the stock market plummeted to the point where GM stock was at $1.50, millions of people had no access to healthcare due to pre-existing conditions, or their children were too old to be able to be kept on their parent's insurance, Bin Laden was still walking around free.
They will then point out that unemployment is down to 6.1%, home values are starting to climb, the stock market is at an all time high, millions of people now have health insurance who didn't before, oil prices are down, Bin Laden is dead, and the two wars fought for over a decade are coming to a close. Social security and Medicare have been protected as is, and the projected deficit is down.
They'll also go on to site they want to continue to push for immigration reform, raise the minimum wage, and provide corporate incentives to hire more Americans, revamp student loan payments, and boost the "middleclass". "There's still work to do!" :)
The Republican party is less unified. There is the extremely conservative "Tea Party" Republicans and the "Moderate Republicans". Any Tea Party candidate such as Ted Cruz will have a difficult time winning in the general election. The perception is they want to "blow up Washington's traditional way of doing business."
Most "Independents", Moderate Republicans, and Conservative Democrats consider them too extreme. People will be reminded of the Republican attempts at "Government shutdown", not extending unemployment, or refusing to raise debt ceiling which lowered the U.S. credit rating.
Republicans will promise to "do away" with everything Obama has put in place. They will seek to repeal Obamacare, cut "entitlement programs", cut corporate taxes, open the Keystone pipeline, deregulate wherever possible, revamp Social Security and Medicare programs, balance the budget, keep the minimum wage where it is, eliminate the path to citizenship for millions of illegal aliens, defund Planned Parenthood, change or eliminate abortion laws,strengthen our borders, and be tougher with our enemies around the world.
People vote their pocketbook. The candidate promising the most "goodies" will win unless there is a national disaster.
My prediction is the Democrats will win again 2016.