santiago conservative billionaire sebastian pinera face center-left senator alejandro guillier runoff chile presidency next month first round vote sunday pinera few vote expect candidates would keep place top copper exporter longstanding free-market economic model former president pinera promise investor-friendly policies turbocharge growth guillier want press outgo president michelle bachelet overhaul education tax labor 98 percent vote count pinera 67-year-old businessman clinch 36.6 percent fall short 50 percent need outright victory chile electoral agency servel say guillier 64-year-old beard former tv news anchor elect senate 2013 22.7 percent two point ahead third place candidate leftist beatriz sanchez whose good expect show likely ensure frente amplio coalition yield sway congress pinera result pollster expectations indicate dec. 17 runoff likely closely-fought contest previously forecast especially guillier rally supporters sanchez four left-leaning rival behind go competitive second round pinera campaign chief andres chadwick tell journalists sunday even recent opinion survey cep last month forecast pinera secure 42 percent likely vote first round easily defeat guillier runoff divisive race guillier call profound unity unite chile fracture leave pinera us therefore must win december guillier tell cheer supporters sanchez endorse guillier fiery speech followers even pillory opponent sebastian pinera step backward country country go different direction sanchez say pinera previously lead chile 2010 2014 flash optimism show campaign trail repeatedly plug campaign slogan good time result similar one 2009. remember 2009 election pinera say buoyant crowd voter turnout high expect factor analysts forecast count pinera repeat runoff bachelet run year term limit guillier one two candidates center-left coalition nueva mayoria back first round speak presidential palace sunday even urge chileans vote december say policy change stake guillier face polish opponent pinera oversee robust economic growth first presidential term overlap high copper price pinera vow double chile economic growth rate proposals include trim corporate tax make state-run miner codelco self-sufficient tweak pension system include incentives late retirement must ease fear would wipe gain make bachelet government students women workers expand free education strengthen unions guillier triumph runoff pledge tackle stubbornly high inequality one latin america business-friendly economies want diversify chile dependence copper increase access free high education write workers right new constitution vote guillier think continue provide free education social right say unemployed voter mario giannetti 53. since transition democracy dictatorship 1990 chile stand one region develop countries public debt grow low copper price hit government revenues recent years bachelet critics say fail court investments prioritize economic growth slow annual average 1.8 percent first since 1990s credit rat agencies fitch downgrade chile debt rat year investors see pinera safe pair hand economy previous term mar massive student protest seek education overhaul responses often see touch grassroots group still oppose early sunday group young protesters storm pinera campaign headquarter arrest police tv image show pinera win first round chile election face runoff