When it comes to population and economic impacts, Scotland is as important to the United Kingdom as Texas is to the United States.

Scottish voters will decide Thursday whether to separate from the United Kingdom after more than 300 years. The referendum has become too close to call, according to the latest polls.

For a better sense of how important Scotland is to the United Kingdom as a whole, MarketWatch looked at its population, land area and GDP.

As can be seen in the (animated) image above, Scotland’s population of slightly more than 5 million people is about 8% of the U.K.’s total. Losing that same percentage of the U.S. population would be equivalent to losing almost all of Texas’s 26.45 million residents. (Proportionally, it would be 26.238 million, or all but eight of Texas’s 254 counties.)

The relative economic impacts are similar, too.

Scotland’s economic contribution to the U.K. is about 9.5% of GDP, including its share of the oil. Texas holds roughly the same importance within the U.S., according to Bureau of Economic Research data.

When it comes to land area, however, the relative comparisons diverge. Scotland represents about 33% of the U.K.’s land area. Everything may be bigger in Texas, but the state’s proportion of total U.S. land area is below 10%, even if you factor out Alaska. To achieve the same proportional effect as Scotland’s exit from the U.K. would have, several other states besides Texas would have to leave the U.S.

But Texans needn’t fear. Their state is still more than 11 times the size of the land of Robert Burns, James Watt, Alexander Graham Bell, Sir Thomas Lipton and Adam Smith.

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And, of course, there are a couple of other notable points in common.

Scotland is home to some of the most successful cattle breeds in history, notably the Angus. The breed first came to the States in the 1800s. That was after the Texas Longhorns, whose history is linked to Spanish exploration.

Offshore oil rigs, Texas style (left) and in Cromarty Firth. Bloomberg

And, as with Texas, oil plays a large role in the Scottish economy. In fact, the region’s move toward independence can be seen as driven by its natural resources. The Texas economy, once largely dependent on oil and cattle, is now slightly more diversified with health care and technology. among other notable industries in the state.