Iowa may be the first in the nation to vote in the presidential primaries, but first doesn't always mean right. In the months between the Iowa caucuses and the Republican and Democratic conventions, a lot can change.

Since 1972 -- when Iowans became the first in the nation to vote for presidential candidates -- only three non-incumbents have won both Iowa and then the general election.

In 2012, former Pennsylvania Senator Rick Santorum and former Massachusetts Governor Mitt Romney were virtually tied. Romney ended up losing by a hair, but went on to score his party's nomination.

Meanwhile, in 2008, Mike Huckabee swept in Iowa. Sen. John McCain (R-Ariz.) went on win the Republican nomination.

All of this means that, though Sen. Ted Cruz (R-Texas) triumphed this year, he should still watchhis back in the months to come. Donald Trump is expected to sweep New Hampshire.

Here's a look back at the Hawkeye State's history of getting it wrong:

Bill Clinton BEN RUSNAK via Getty Images Future president Bill Clinton lost in the 1992 Iowa caucuses to Iowa Senator Tom Harkin. Hard to beat a hometown hero. He went on to win both his party's nomination and of course the general election.

George H.W. Bush Boston Globe via Getty Images Future president George H.W. Bush didn't even come close to victory in Iowa during the 1988 caucuses. He scored just 18.6% of the vote, compared to Kansas Sen. Bob Dole's 37%.

Ronald Reagan ASSOCIATED PRESS Ronald Reagan lost to George H.W. Bush in the 1980 Iowa caucuses, but went on to win his