The Labor leader has visited Queensland 47 times since the last federal election, concentrating on regional seats.
The surge in Ukip support recorded in both the 2014 European parliament election and 2015 general election was concentrated among voters whom Matthew Goodwin and I labelled the "left-behind": older, white, socially conservative voters in more economically marginal neighbourhoods.
Three years of near-zero growth and worries that unemployment may not drop before the 2017 election have concentrated minds.
Liberal political commentator, host of "The Alan Colmes Show" on Fox News Radio, publisher of alan.com, author of "Thank the Liberals For Saving America" The right wing, which has been trying to push a Benghazi "scandal" since before Mitt Romney blew the 2012 election, has concentrated on one phrase Hillary Clinton said during her five-hour congressional testimony.
Twenty years ago, in the campaign for the 1982 midterm elections, Democrats concentrated on the weakness of the economy and President Ronald Reagan's economic policies, and gained 26 seats in the House of Representatives.
In some recent elections, we concentrated on only the open-seat contests or on only those candidates whose support made them appear the most viable.
Mr Simon resigned as Labour MP for Birmingham Erdington before the 2010 general election to concentrate on becoming the city's first elected mayor.
But Cameron has become much closer to Lynton Crosby, the Tories' election chief, who has argued that it is much more important in the 2015 election to concentrate on winning over potential Ukip voters who are concerned about increases in immigration.
The "Yes" campaign, mindful of the wonky polling in Britain's recent general election, is concentrating on getting those young voters to the polls.
Last month he shocked the country by saying he would step down as prime minister after the presidential election to concentrate on strengthening civil society.
