@ Terry
Terry, Jessica is an example over 10 years old.
If you look to more recent Eurovisons, such as 2008, 2009, 2010, 2011 and 2012, where have all the winner's come from? that's right, from 17 - 24.
And let's look at how the early entries went:
2008 - Romania, UK, Albania all bombed. Same story a year later in 2009 with Lithuania and Israel. Even France did badly - only the jury helped Patricia out. In 2010, Azerbaijan, the great hope to beat Germany came 5th - and again, her televotes were not that great. Then there's Spain and poor Didrik who came 23rd. In 2011, Paradise Oskar met an early defeat, as did Kati Wolf. Only Dino's fame in the Balkans helped him out. Last year now, in 2012, Englebert bombed, along with Compact Disco. Given that their songs weren't 'winner' material, their draw certainly didn't help them in any way either.