The likelihood that Obama and McCain each net 269 electoral votes is not so far - fetched . A CNN poll finds eight states that could yield a Electoral College tie . In the event of a tie , each state 's congressional delegation casts a single vote for president . But could it finally happen this year ? In 1825 , the House awarded the presidency to John Quincy Adams .
The likelihood that Obama and McCain each net 269 electoral votes is not so far - fetched . A CNN poll finds eight states that could yield a Electoral College tie . In the event of a tie , each state 's congressional delegation casts a single vote for president . In 1825 , the House awarded the presidency to John Quincy Adams .