Ariel used NIS 15,000 ($4,090) of his budget on a website and social network activities.
The first runner-up is MK Ilan Ghilon (Meretz), who spent NIS 85,000 ($23,190) last year, including NIS 43,000 ($11,730) on office services and NIS 4,804 ($1,310) on newspapers.
The second runner-up is MK Isaac Herzog (Labor), who spent NIS 78,000 ($21,280), including nearly NIS 13,000 ($3,550) on printing and advertising services.
They are followed by Home Front Defense Minister Avi Dichter, who was not elected to the new Knesset, with NIS 76,000 ($20,730), including NIS 39,000 ($10,640) on printing and advertising, former MK Zevulun Orlev (Habayit Hayehudi) with NIS 74,668 ($20,190), and MK Israel Eichler (United Torah Judaism) with NIS 74,560 ($20,340).
And who made it to the bottom of the list? Minister Benny Begin did not spend a single penny on his voter relations, same as the previous year. Defense Minister Ehud Barak, who settled for NIS 345 in 2011, did not spend a penny either in 2012.
Former Foreign Minister Avigdor Lieberman spent just NIS 89 ($24) from his voter relations budget. The entire sum was used for office supplies.
Last year it was former MK Otniel Schneller (Kadima) who topped the list with some NIS 94,000 ($25,650) used to maintain voter relations, followed by MK Raleb Majadele (Labor), who drew up a total of NIS 83,000 ($22,650).