Election fever is running hot, and it is easy to lose track of developments at what could well turn out to be the midpoint of the election season.

This halfway juncture is assuming that speculation about an early-to-mid-September poll day is correct and based on the kick-off point being July 24. That was when the report of the Electoral Boundaries Review Committee was released.

Candidate introductions have come thick and fast, not to mention the point-scoring that goes with the territory - recall the comments from the Workers' Party on the shock announcement by Transport Minister Lui Tuck Yew that he is leaving politics, and how the PAP retorted they were "crocodile tears".

Then, there has been the ebb and flow, and flow and ebb, of opposition party agreements on staking claims on constituencies to avoid vote-splitting three-corner fights.

So to save a lot of head-scratching, Insight has recapped electoral developments so far that Singaporeans need to know. As there have been so many, we have crunched them into Five Big Concerns (with a nod to the old joke about Singaporeans' five obsessions of car, cash, credit card, condominium and country club membership).

Times have changed, and so have the Cs. Today, as the nation gears up to vote for its future in the landmark SG50 year, the election 5Cs are shaping up as the Clash between the ruling PAP and the onward-marching WP. For example, what part does the latter's saga over troubled town council finances play on the political agenda now?

Then there is the much-vaunted opposition Consensus - what's happening now? And there are the new Candidates, of course. Insight looks at a new theme emerging there.

We also look at the Countdown to what might be a likely date, and fifth, we update you on the all-important election-mood barometer - the talk at the coffee shop.