Editor's note: This story has been updated with the canvassed results of the 2016 presidential election.

Texas last backed the Democratic candidate for president 40 years ago, when Jimmy Carter defeated Republican Gerald Ford by 3.2 percentage points. In the 10 elections since then, the state has been a reliable Republican stronghold. 

On Tuesday, Republican Donald Trump defeated Democrat Hillary Clinton by 9 points in Texas on his way to winning the 2016 presidential election. Though Trump's margin of victory wasn't as large as those in the most recent Texas contests, it's not the smallest margin for a Republican since Carter's win.

In 1992, Democrat Bill Clinton lost the state to then-President George H.W. Bush by 3.5 percentage points, in an election in which independent Ross Perot, a Texan, drew 22 percent of the state's vote.

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