Complex sentence: She was a candidate mayor of Athens twice, in 1994, supported by Synaspismos, and in 1998, supported by both Synaspismos and PASOK; in the latter year she came second, defeated by Dimitris Avramopoulos, supported by the conservative party of New Democracy.
Split into simpler sentences: She was a candidate mayor of Athens twice, in 1994, supported by Synaspismos, and in 1998, supported by both Synaspismos and PASOK. She came second in 1998, defeated by Dimitris Avramopoulos, who was supported by the conservative party of New Democracy.