As with any sporting event we never know the outcome until the game is finished. Only time will tell since anything we do before that is purely speculation. It seems to be a pretty close and unpredictable championship so who knows Portugal might be able to take it home but we never know until the fat lady sings.
Yes, Portugal has a chance to win the tournament of the Euro 2016. If they did not have a chance then they would not have made it this far. The fact that they are still in contention shows how strong they are. They may in and they may not but they do have a chance.
While the history of soccer in Portugal has been a mixed bag, the 3-3 draw with Hungary shows that there is still hope for the team to win the tournament. However, they will have to really fight hard and work hard in order to do so because they face some stiff competition.
Yes, I think that Portugal has a chance to win the tournament because Portugal has arguably the best player in the world, Cristiano Ronaldo. Ronaldo is a prolific goal scorer and your team is never an underdog with him on your roster. Portugal is also in the easier group and has a good chance to advance and win the tournament.