So, here's the calendar for 2013:
January
11–12 January: Czech Republic, President
20 January: Austria, conscription referendum
22 January: Israel, Parliament
23 January: Jordan, Parliament
27 January: Bulgaria, nuclear power referendum
Cuba, Parliament [1][2]
Barbados, Parliament
February
1 and 3 February: Liechtenstein, Parliament
10 February: Monaco, Parliament[1][3]
17 February: Cyprus, President
17 February: Ecuador, President and Parliament[1][4]
18 February: Armenia, President [1][5][6]
22 February: Djibouti, Parliament
24–25 February: Italy, Parliament [1][7]
October 2012 to February 2013: PR China, National People's Congress
Cameroon, Parliament
March
4 March: Kenya, President and Parliament
9 March: Malta, Parliament
By March 2013: Malaysia, Parliament [1][8]
April
21 April: Paraguay, President and Parliament[1][9][10]
21 April and 5 May: French Polynesia, Assembly
Montenegro, President [1]
May
8 May/3 July: Madagascar, President and Parliament
12 May: Guinea, Parliament
13 May: Philippines, General (Senate, House of Representatives)
Italy, President [1][11]
Andorra, Parliament (tentative) [1]
Mongolia, President [1][12]
June
14 June: Iran, President
23 June: Albania, Parliament
23 June: Tunisia, President and Parliament
Qatar, Legislative (tentative)
July
28 July: Cambodia, Parliament
Maldives, President
September
9 September: Norway, Parliament
Germany, Federal
Macau, Parliament[1]
Rwanda, Parliament[1]
Austria, Legislative[1]
October
6 October: - Belize and Guatemala, International Court of Justice referral referendum
Azerbaijan, President[1]
Ethiopia, President[1]
Georgia, President
November
Tajikistan, President[1]
Honduras, President and Legislative[1]
Saint Helena, Parliament[1]
December
Chile, President[1]
Turkmenistan, Parliament[1]
http://en.wikipedia.org/wiki/National_electoral_calendar_2013