I'm not so much opposed to you messing with the world as just being so far removed from everyone else. The Conclave is the central focus of this. Either you win their approval, sabotage their opinions of others or turn your sights on the individual members themselves to blackmail/threaten your way to the top. 

Speaking of which, I've created the official Conclave draft list. 150 people who will elect the next Monarch.

 [hider=My Spoiler]12 Merchants, Traders, Peddlers and Innkeepers
4 Business Tycoons (Iron, Wine, Dresses, and Meat industries)
14 Teachers, Librarians and Scholars
8 Housewives, Widows and Mothers
15 Lower-Middle class working men
4 Farmers
10 Soldiers in the Royal Army and Navy
5 Adventurers, Mercenaries, Sellswords and Duelists
10 Priests
28 Men and Women of Noble Birth, Landholders and Government Officials
3 Foreign Dignitaries (The three countries bordering Matal, more honorary than anything)
4 Native Dwarves
3 Hunters
3 Fisherman
7 Wizards, Magicians, Witches and other Magically Affiliated
15 Blacksmiths, Builders, Plumbers and other Craftsmen
12 Individuals who bought, bribed, blackmailed or otherwise nefariously gained their way into the Conclave
8 Artists, Painters, Poets and Bards[/hider]

So obviously, a good ruler naturally appeals to the nobles, has a good sense of stewardship and is in favor of helping small businesses within their kingdom. The Conclave reflects these factions and will easily get a ruler elected who pleases them, but you could always gather the support of the others en masse. So say for a publicity stunt you promise to grant farmers extra bonuses for producing enough crops if you are monarch. You could get the niche vote of 4 farmers, but maybe you'll lose the support of the merchants who have to pay for that. Or maybe you're naturally a pious person. That promises the votes of the 10 priests, but what about those 12 who are in the Conclave through shady means? They surely wouldn't want a goody two-shoes as their king. Etc. etc. 

So basically as you're playing the Conclave is forming opinions about you. So you could use a bit of strategy to try and get enough people to vote for you, or try and forge your own way to kinghood.