Well Pahor is winning. The question is only will it take round 2 for him to get 50% or is it round 1 win already. He should get about 40% but it all depends on whether the "undecided" part of the voters decides to support him in the end or not.
Pahor was previously (since 2008 I think?) the prime minister of the socdem government, but since he has fallen out of favour of the behind-the-scenes of Slovene "left wing". Since he's extremely good at being a likeable personality, this made him the best person in Slovenia to mend the abyss between the "left wing" (remnants of the old communist party that now works behind-the-scenes and through indoctrination of social sciences students which they use as army for protesting), and the "right wing" (which is mostly Janez Janša and his fanclub).
Marjan Šarec is current mayor of Kamnik, supported by behind-the-scenes socialists. He's pretty young, he used to be a stage political parodist before his current mayoring.
Ljudmila Novak is basically Slovene Frau Merkel, with slightly less focus on poor refugees.
Maja Makovec Brenčič is candidate of the current prime minister, she's your typical socialist official who hates anything Christian and likes statism and rules.
Romana Tomc is candidate of Janez Janša's party, she's currently sitting in the EU parliament where she's pretty active. She should stay in the EU parliament if you ask me, she's the only Slovene representative there who actually attends to her business and also lacks the charisma to be anything other than a member of a parliament.
Boris Popovič is mayor of Koper (Slovene port city) for the last 4 mandates (I think), he's been involved in some corruption shit that even went to court, but he hasn't been landed in jail yet. At first he was allied with other "left wing" businessmen/mafia, but apparently he can't be controlled so there's been a lot of effort into dismantling him. He sounds like a good businessman and makes a good mayor for a trading city.
Angelca Likovič was leader of some """"reality"""" shows (Kmetija - "The Farm", where they take a bunch of city folks and take them to a rural house somewhere in the middle of nowhere where they need to manage the veggies and livestock, along with usual demeaning """"reality"""" show shit). She recently gathered relevance during the recent two gay """"marriage"""" referendums where she was one of the leading opponent figures (the gay """"marriage"""" law failed on a referendum twice in last 5 years, btw).
Andrej Šiško is the /pol/ tier candidate, he's spilling red pills like mad. Needless to say, the media have almost completely boycotted him and refused to acknowledge him as a serious candidate. He lives with his parents, was in jail once for setting up a bomb on someone's car, and was leader of NK Maribor's ultra club for more than a decade. He also owns a replica of "Knežji Kamen" - a Roman column base that was used by Carantanian/Carinthian dukes for enthronement ceremony.
Suzana Lara Krause seems to be mentally retarded; she's teacher of Slovene and Russian but is too incompetent to actually work. She's married to some American dude who appears equally dumb.