Clinton vs Trump: Who won the debates?

Washington - The new president will be inaugurated and enter the White House on January 20

After complicated process involving the Electoral College, the winner will eventually be announced on January 6 2017.  The new president will be inaugurated and enter the White House on January 20. America's next leader will take the Oath of Office at noon local time on inauguration day. 
Final Trump-Clinton debate: October 20, 2016 
A CNN/ORC poll of US voters who watched the final presidential debate between Hillary Clinton and Donald Trump conclude that Clinton won. A YouGov poll of almost 40,000 respondents also puts Clinton ahead.

During the debate Trump refused to say that he would accept the results of the presidential election, claiming that voter fraud and a media conspiracy could affect the result.
Clinton accused Trump of "talking down our democracy" out of frustration with his flagging campaign.
Town hall presidential debate polls: October 10, 2016
A CNN/ORC poll found that 57% of voters who watched the second presidential debate between Hillary Clinton and Donald Trump thought Clinton won, compared to 34% for Trump. A YouGov poll found a smaller margin for Clinton, 47% to 42%. Both are trying to win support from some 10-14 million voters that are still undecided.

Data from the RAND Corp.'s Presidential Election Panel Study estimates about 11 percent of registered voters are undecided, while weekly surveys conducted by YouGov for The Economist suggests around 8 percent of registered voters are undecided. Both data sets show undecideds are split evenly between Democrats and Republicans
In the 2012 election, the difference in the popular vote was just 4.9 million, so these 10-14 million voters are king-makers.
Post debate polls: September 27, 2016
Two polls of more than 1,500 people who watched the presidential debate between Hillary Clinton and Donald Trump conclude that Clinton won.

Both are trying to win support from one-in-three voters that are still undecided.
First Twitter election
Since declaring his candidacy for president, Donald Trump has used Twitter to insult whole countries, news organizations, and Hillary Clinton -- most of all Trump calls his opponent "crooked" and "dishonest."
The Associated Press has described theTrump-Clinton campaign as the country's first nationwide Twitter election.

Four years ago, candidates Barack Obama and Mitt Romney were just testing the waters with social media. This year, it's a primary source of information - political and otherwise - for a huge number of Americans. Trump's Twitter followers outnumber Clinton's, 12.7 million to 10 million.  

• Battle For White House