The methods that historians utilize to write history differs based on their perspective and interest. But, many begin with some similar research methods. Basically, they're factors like philosophy and focus that make writing history unique to the historians.
Historians use literary sources and archaeological excavations to prove their answer
In literary sources manuscript and inscription
Manuscripts are written by hand the word manuscripts come from Latin word manu which means hand manuscripts are perishable the leftover manuscripts are preserved in temples and monasteries
Inscriptions are written on hard surfaces they are imperishable so that’s a positive thing about them
Other literary sources are books vedas songs hymns etc
Sometimes the Electoral College votes do not reflect the popular vote. It is the number of Electoral College votes that determine who is elected president and not the percentage victory int he popular vote that determines victory.