live births to Swiss citizens and births to non-Swiss citizens, and in same time span there were 25 deaths of Swiss citizens. Ignoring immigration and emigration, the population of Swiss citizens decreased by 3 while the foreign population remained the same. There was 1 Swiss man and 1 Swiss woman who immigrated back to Switzerland. At the same time, there were 5 non-Swiss men and 5 non-Swiss women who immigrated from another country to Switzerland. The total Swiss population change in 2008 (from all sources) was an increase of 9 and the non-Swiss population change was an increase of 3 people. This represents a population growth rate of 0.7%. The age distribution, , in Blenio is; 135 children or 7.5% of the population are between 0 and 9 years old and 171 teenagers or 9.5% are between 10 and 19. Of the adult population, 166 people or 9.3% of the population are between 20 and 29 years old. 217 people or 12.1% are between 30 and 39, 269 people or 15.0% are between 40 and 49, and 250 people or 14.0% are between 50 and 59. The senior population distribution is 222 people or 12.4% of the population are between 60 and 69 years old, 215 people or 12.0% are between 70 and 79, there are 147 people or 8.2% who are over 80. Historical population The historical population is given in the following table: During construction of the Luzzone Dam Heritage sites of national significance The parish church of S. Martino is listed as a Swiss heritage site of national significance. The villages of Dangio and Olivone Chiesa-Solario are listed in the Inventory of Swiss Heritage Sites. Politics In the 2007 federal election the most popular party was the FDP which received 34.3% of the vote. The next three most popular parties were the CVP (22.03%), the SP (18.21%) and the Ticino League (14.82%). In the federal election, a total of 634 votes were cast, and the voter turnout was 44.0%. In the Gran Consiglio election, there were a total of 1,496 registered voters in Blenio, of which 924 or 61.8% voted. 20 blank ballots and 2 null ballots were cast, leaving 902 valid ballots in the election. The most popular party was the PLRT which received 257 or 28.5% of the vote. The next three most popular parties were; the PS (with 164 or 18.2%), the SSI (with