LAWRENCEMMA2165GO LAWRENCEMMA2165GO History Answered Which two factors were critical in ensuring Thomas Jefferson's victory in the 1800 presidential election? - The Federalist party split its votes between John Adams and Aaron Burr. - The recently created Republican news network played an important role in influencing voters. - John Adams faced a scandal over his personal finances. - The Constitution's three-fifth's clause increased the voting power of Southern states.