American election thriller: What happens if the outcome is disputed

Despite incomplete results from several battleground states that could determine the outcome of the US presidential race, President Donald Trump proclaimed victory over Democratic challenger Joe Biden on Wednesday.
 

The premature move confirmed worries Democrats had voiced for weeks that Trump would seek to dispute the election results. That could set off any number of legal and political dramas in which the presidency could be determined by some combination of the courts, state politicians and Congress.

Here are the various ways the election can be contested:

Lawsuits
 

A close election could result in litigation over voting