TWO explosions near electoral candidates' offices in Pakistan's southwestern province of Balochistan killed 26 people and wounded dozens, officials said, raising concerns over security on the eve of a general election. Pakistan goes to the polls on Thursday amid rising militant attacks and the jailing of Imran Khan, the winner of the last national election, who has been dominating the headlines despite an economic crisis and other woes threatening the nuclear-armed country. Authorities have said they are boosting security at polling booths. The first attack, which killed 14 people, took place at the office of an independent election candidate in Pishin district. The second…