conservative frontrunner sebastian pinera center-left alejandro guillier lead crowd field candidates chile presidential election sunday widely see referendum reform outgo president michelle bachelet follow main policies support pinera guillier billionaire businessman serve president 2010 2014 pinera promise make chile first country latin america achieve develop nation status organization economic cooperation development paris-based club wealthy nations pinera market favorite would cut corporate tax increase investments say policies would double economic growth term pinera 14 billion four-year spend plan include overhaul bachelet tax reform would cost 2.7 billion new investments infrastructure hospitals pinera say would pay proposals cut unnecessary government spend simplify tax code pinera billion plan revitalize chile pension system criticize deliver small payouts include new subsidies raise pension women middle class well incentives encourage workers retire late help revive cash-strapped state miner codelco world copper producer pinera commit overturn dictatorship-era law transfer 10 percent company export sales military also want codelco deploy realistic investment plan use exist resources focus exist assets rather new project guillier former journalist elect senate 2013 pledge diversify chile economy away dominant copper industry want add value commodities export process copper home give communities outside santiago strong say decision-making follow lead ally bachelet guillier call rewrite chile constitution formally recognize indigenous communities codify right workers collective bargain strike boost payouts pension system guillier propose raise fiscal spend pension introduce new mandatory contribution employers guillier would also increase regulation oversight private pension fund administrators like pinera guillier call repeal codelco mandatory contribution military want state-run miner stay active abroad ensure remain world top copper producer also signal would seek maintain codelco relations workers spar company strike hit private miners bachelet factbox chile 's top presidential candidates stand reform