Overdrammatic title. They will vote Maduro out in 2018 if the election is anything close to fair.
They have not yet held an unfair election. Not to say they won't.
...Seriously?! That is so far from reality I can't even get snarky about it...
Yes they are so good at rigging elections that the ruling party got decimated in the legislative elections in 2015 and Chavez himself lost a constitutional refendum. Venezuela has held free elections since 1998, period, all international observers have agreed.
The fact that the regime has now essentially nullified the 2015 results by removing all of the legislature's power is a big sign that they're now unwilling to accept any concession of power and that they are likely to do the same in the future. If they weren't willing to give up legislative power today, what would make them likely to give up presidential power tomorrow?
I do not know what they are going to do in 2018, my best guess is they lack the power to conduct a successful fake re-election of Maduro, who will lose by 65/35 or more in a fair vote. If they try to pull off the judicial coup the presidency as they have with the legislature the regime would not last much longer, though many people would die. For now there is no reason not to coup out the legislature, it is not like Maduro has any support left to alienate.