Pennsylvania appointed 21 electors for each of the presidential elections of 2004 & 2008, they appoint 20 electors for each of the presidential elections of 2012, 2016 & 2020, and if the U.S. Census Bureau population projections for the year 2020 turn out to be accurate, they will be appointing 18 electors for each of the presidential elections of 2024 & 2028.
Connecticut appoints seven electors for each of the presidential elections of 2004 through 2020.
Nebraska appoints five electors for each of the presidential/ vice presidential elections of 1964 through 2020.
This is theoretically possible, and at some points in history, so-called "faithless electors" did in fact break their own pledge to vote for a certain candidate, and instead voted for someone else; some sources say that this has happened with presidential electors more than 150 times over the centuries, but it did not affect the final outcome. Such exceptions are rare, however, since it has become a custom that when a state awards its electoral votes to a presidential candidate, the expectation is the electors will cast their (largely symbolic) votes for that person; many electors are selected by their political party, so they understand how the procedure is supposed to work, and most go along with it. Interestingly, there are twenty-one states in which the electors are not obligated to do that. I enclose a link to a thorough list of state laws about electors, and which ones are not bound by anything other than custom or tradition.
Donald Trump received 304 electoral votes, receiving 62,984,825 votes to Hillary Clinton's 65,853,516 votes. 2 faithless Republican electors voted instead for Ron Paul and John Kasich.
Minnesota has 10 electors in the Electoral College.
Nevada appoints six electors in each of the Presidential/ Vice Presidential elections from 2012 through 2020.
The State of Alabama is given 9 electors.
Washington D.C is allowed to appoint 3 electors.
11 presidential electors who vote for the president and vice-president.
14
Three.