BRATISLAVA (Reuters) - Support for Slovakia‘s four-party coalition government, which recently announced more economic austerity measures, has dropped to 52.8 percent from 57.6 percent in June, an opinion poll suggested on Wednesday. The combined support of the opposition, led by former premier Vladimir Meciar, rose to more than 41 percent from 37.9 percent in June. The poll by the Focus agency was conducted among a representative sample of 1,043 respondents between July 2 and July 12. Focus is a private polling agency.