Political analysts said one of the greatest beneficiaries of the crisis could prove to be Mr. Klaus, an outspoken economic liberal, who is skeptical of the European Union. He founded the Civic Democratic Party of Mr. Topolanek, but in recent months he has criticized the prime minister for being too fervent an advocate of greater European integration, and he recently resigned as honorary chairman of the party. Under the Constitution, as president he has to designate a new prime minister, making him the new kingmaker in Czech politics.