Libertarian presidential nominee Gary Johnson's next chance to generate a breakthrough in the race for the White House is coming up Aug. 26 when Fox Business Network hosts a town-hall meeting featuring Johnson and his vice presidential running mate, former Republican Gov. William Weld of Massachusetts.

Johnson, the former Republican governor of New Mexico, has not risen in the polls as he had hoped and is looking to create new momentum with the town hall. He needs 15 percent in national polls to be included in the main presidential debates in September and October. As of now, most polls give him less than 10 percent.

The Aug. 26 Fox-sponsored town hall follows two similar events sponsored by CNN, one in June and one in early August.

Johnson recently told U.S. News that his main objective is to reach or exceed 15 percent and participate in the main presidential debates, which he admits is essential if he is to get sufficient media exposure to make a real difference in the November election. It's believed that Johnson has the potential to do well, in part because most Americans give unfavorable ratings to the major-party nominees, Democrat Hillary Clinton and Republican Donald Trump.

Johnson says he is socially liberal, fiscally conservative and non-interventionist in foreign policy. He is also a long-time supporter of legalizing marijuana.

The debates sponsored by the nonpartisan Commission on Presidential Debates are scheduled for Sept. 26, Oct. 9 and Oct. 19.

Johnson has generated considerable interest in his candidacy, as indicated by increased media attention and a large number of Google searches about him and his campaign. But he still has a long way to go to reach the 15 percent mark in the polls, so the next few weeks will be crucial, and the Aug. 26 town hall could make a substantial difference.

On Monday, Johnson said his campaign has attracted 40,000 people so far who pledged to donate at least $15 to his effort on Aug. 15, when he is trying to create a "money bomb"--a single day when he hopes he can announce a multi-million dollar fund-raising haul. He would use the money to finance campaign ads and to strengthen his state-by-state organization.