Using close election outcomes, we identify a personal effect of incumbency on the probability of seeking election, and seeking and winning office in subsequent elections for elected officials in an Open List Proportional System.
The red bars show the probability of an election result of forty-nine or fewer Democratic and Independent seats, leaving fifty one seats for Republicans and guaranteeing them control.
There is less probability of an election night surprise when the polls are fairly consistent with one another, as they are in this case.
The lead probability calculated pre-election slowly decreases as the model moves toward a predicted win probability on Election Day.
"There has been much debate over whether incumbents manipulate fiscal and monetary policy instruments to influence the level of economic activity prior to an election in order to maximize the probability of re-election," Mr. Julio said in his own study.
Our chart shows how Brazilian hopefuls' chances, calculated in a similar fashion by Mr El-Dash, have shaped up since the campaign was upended by the tragic death in a plane crash in mid-August of Eduardo Campos, a centrist candidate.President Dilma Rousseff's probability of re-election went from 55% in mid-August to 25% a few weeks later.
Certainly, a glance at the betting markets reveals a pretty strong consensus that President Obama has a strong edge with the bookmakers, the spread betting operators and the betting exchange, Betfair.com, each of these currently converging at a probability of re-election of about 68percentto70percentcent.
Using data from Norwegian local elections 2003 2015, we document that a candidate that barely wins a seat in the local council has about a 9 percentage points (43%) higher probability of being elected in the next election compared to a candidate that just misses out on a seat on the same party list.
According to The New York Times Election oracle Nate Silver, Obama had almost the same probability of winning the election when Romney was nominated, as he did the month before the election, despite the roller-coaster ride in between.
"He'd have a higher probability of winning an election statewide as a Republican," said Hank Sheinkopf, a Democratic political consultant.
