Using landslide in a sentence and paraphrazing it [closed]
Solution 1:
Did they mean here to the first meaning? Answer: no. It still means the second meaning of which you indicated: A percentage of votes greatly exceeding the required margin of victory.
Let's see the sentence: The result is there's no sentence indicating that when used metaphorically in a campaign (especially an election) it would mean the other meaning. (And the subject is a demagogue would mean a political leader who seeks support by appealing to popular passions and prejudices).
You can see the but here is very important. It means that this 'demagogue' is a special case. We can conclude that "As a politician who gives enthusiastic ovation "when his opponent triumphs" in a landslide" s/he is a quirky one. And the first sentence emphasizes this more: A demagogue should never exude euphoria near the surface in a campaign. It's established in the first sentence that you, as a politician, shouldn't exude any "euphoria" or a feeling of great or exaggerated elation.
A demagogue should never exude euphoria near the surface in a campaign, but this politician gives enthusiastic ovation when his opponent triumphs in a landslice.
As for your first question about landslide,
From Webster's:
1 : the usually rapid downward movement of a mass of rock, earth, or artificial fill on a slope; also : the mass that moves down
2 a : a great majority of votes for one side b : an overwhelming victory
From Oxford's Dictionary:
1.A collapse of a mass of earth or rock from a mountain or cliff:
2.An overwhelming majority of votes for one party or candidate in an election: they won by a landslide
Example: She was expected to win by a landslide. Common Phrase: a landslide victory.
Usually being used in: - Voting in elections - Running for election - Conduct/hold an election/a referendum (especially North American English) - Run for office/election/governor/mayor/president/the White House (especially British English)
Source: http://www.oxforddictionaries.com/definition/learner/landslide
From Vocabulary.com :
When dirt and rock from a mountainside coming sliding down, call it a landslide.
Another kind of landslide takes place when one candidate soundly defeats another in an election. With either type of landslide, it's probably safest to stay out of the way! The political meaning of landslide is commonly used, but it's not the word's original definition.
In a political news: "Trump is still dominating in the national polls and in most of the early primary states, save for Iowa. And that’s good news for Democrats: Both Clinton and Sanders lead Trump in head-to-head surveys, and would likely win in a landslide."
Source: http://www.salon.com/2015/12/23/forget_donald_trump_democrats_marco_rubio_is_the_nightmare_that_could_strike_hillary_clinton/
So, we can conclude from these examples that this 'landslide' means your second meaning, i.e.: A percentage of votes greatly exceeding the required margin of victory.
When I researched your question: **
https://www.google.com/search?q=winning+in+a+landslide&ie=utf-8&oe=utf-8
It is consistent throughout the searches that it means the second meaning.
**
Researching further for added references,
Landslide election:
How Much a Landslide Election Is
One generally agreed upon measure of a landslide election is when the winning candidate beats his opponent or opponents by at least 15 percentage points in a popular vote count.
Source: http://uspolitics.about.com/od/Electoral-College/a/How-Much-Is-A-Landslide.htm
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Regarding the ""triumphs" and not "triumph"", it is because of his opponent is "a singular" and triumphs here functions as a verb which means to express great joy because of winning something and is deemed as a verb. It is also to indicate that:
... but this politician gives enthusiastic ovation when his opponent triumphs in a landslide.
It's called tenses consistency. Source: http://www.towson.edu/ows/tenseconsistency.htm