ຮອງປະທານາທິບໍດີ ເລືອກເອົາຜູ້ທີ່ຈະປ່ຽນແປງການແຂ່ງຂັນ ສໍາລັບການເລືອກຕັ້ງ ສະຫະລັດ ບໍ?

Now that both the Democratic and Republican presidential candidates have selected their running mates, the question is whether those picks will actually help boost the campaigns’ chances of winning the November election.