As the counting progresses following Saturday's federal election, significant developments are unfolding across several key electorates in Australia, with tight races and unexpected outcomes emerging.

Greens leader Adam Bandt faces a precarious situation in the Melbourne electorate, where a majority of preferences appear to be shifting towards his Labor opponent, Sarah Witty.

Although Bandt initially secured the most first preference votes, the increasing support for Witty poses a serious threat to his tenure, which he has held since 2010. Meanwhile, other Greens candidates have seen setbacks, with two of their MPs conceding defeat in Queensland.

In the northern Sydney seat of Bradfield, the Liberal candidate Gisele Kapterian has edged ahead of teal independent Nicolette Boele.

Kapterian now leads by 44 votes following the counting of postal votes, overturning an initial election night scenario that favored Boele.

In Tasmania, Labor has gained ground by securing two additional seats, which has eliminated the opposition's hold on the lower house.

The Labor campaign has capitalized on voter support linked to the salmon farming industry, specifically focusing on environmental protections related to salmon jobs.

An independent candidate, Peter George, has also emerged strongly in the race for the southern Tasmanian seat of Franklin, nearly closing in on the incumbent Fisheries Minister, Julie Collins.

Continuing in Goldstein, Liberal challenger Tim Wilson has overtaken teal incumbent Zoe Daniel.

Initially believing she had retained her seat, Daniel is currently trailing by 390 votes as the ongoing postal vote count heavily favors Wilson.

Other notable raising of issues include Nationals deputy leader Perin Davey expressing disappointment over her diminishing chances of re-election to the Senate, attributing her likely defeat to the public's disillusionment with the Liberal Party.

Her position is deemed critical, as a loss could catalyze a reshuffling of leadership within the Nationals.

Among the projected outcomes, the Nationals have unexpectedly taken the lead in the historically safe seat of Bendigo, marking a significant event as they seek to expand their representation across the Parliament.

With a significant resource investment in this area, current results show the Nationals candidate ahead of Labor's Lisa Chesters in the two-party preferred count.

As results continue to unfold, the implications for the Coalition’s representation and the broader political landscape in Australia remain to be fully understood.

The ongoing count, particularly involving postal votes, is expected to bring more challenges and surprises in the coming days.