caracas venezuelan state elections may repeat five state opposition governors-elect continue refuse swear controversial pro-government legislative superbody president nicolas maduro warn friday warn come televise speech government sunday unexpectedly 18 23 state vote opposition call fraudulent authorities mandate elect governors participate ceremony pro-government constituent assembly five opposition winners take part anyone want governor recognize constituent national assembly otherwise elections repeat state assembly recognize maduro say inauguration one socialist candidates western lara state opposition say law oath must take regional parliaments constituent assembly far none candidates undergo process formally assume roles venezuela opposition leaders say would travel abroad denounce call dirty trick government outright fraud minerals-rich state bolivar maduro say opposition cry fraud whenever lose elections venezuela electoral system secure world venezuela maduro warn repeat elections state opposition