Andrew Jackson won the presidential election with 50% of the popular vote & 68% of the Electoral College votes. His big margin of victory was due to his popularity and his ability to be seen as a

National Hero

Explanation:

According to historical records and background, in the 1828 presidential election, Andrew Jackson's big margin of victory was due to his popularity and his ability to be seen as a "NATIONAL HERO."

Andrew Jackson was generally seen as a national hero due to his significant role in defeating the British at the Battle of New Orleans in 1815 during the British war of 1812 or the Forgotten War which lasted between 1812 to 1815.

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