Why was Johnson picked as Lincoln's running mate in 1864?

Question

Quizplus · Accepted Answer

In 1864, the Republican Party created a National Union Party to broaden its support beyond just Republicans. Lincoln was a Republican, but he chose Johnson, who was a Democrat from Tennessee, as his running mate to create a sense of national unity and appeal to War Democrats and other non-Republican voters. Johnson's loyalty to the Union during the Civil War also made him an attractive candidate.

Why Was Johnson Picked as Lincoln's Running Mate in 1864