ROME - Premier Silvio Berlusconi's conservative coalition was reeling Tuesday from a heavy defeat in regional elections held across Italy in a ballot seen as a key test of the government's strength ahead of a national vote due for next year. With final results in for all but two of the 13 regions where elections were held, the center-right won just twice, with the center-left gaining the governorships in nine regions. In the two other regions, the center-left candidates were ahead with almost all votes counted. Going into the election, the conservatives had eight regions of the 13 up for...