My 18 year old son was checking results at about 6 this morning - he voted for the first time for Labour and our constituency was a very narrow win for Labour over the SNP (about 250 votes).
Pretty sure his reaction is "Wow this voting thing actually works" :-)
in my constituency in a university city and thus with many under thirties the total turnout was down seven percent. However Labour who the young tend to vote for got more votes.