The next primary-date was the Potomac primary on February 12. It is called that because the three states; [[District of Columbia]], [[Maryland]] and [[Virginia]], which all were near the Potomac River, had their primary date on the same date. John McCain won all three Republican contests, while Barrack Obama won all of the Democratic contests. | The next primary-date was the Potomac primary on February 12. It is called that because the three states; [[District of Columbia]], [[Maryland]] and [[Virginia]], which all were near the Potomac River, had their primary date on the same date. John McCain won all three Republican contests, while Barrack Obama won all of the Democratic contests. |