The ruling Saenuri party candidate Park Geun-hye wants to differentiate herself from the pack by showing the public that she is prepared.
Park announced a set of detailed plans to tackle the nation's housing problem on Sunday.
In particular, she laid out ways to alleviate burdens for Koreans with mortgages and plans to increase rental housing by 1.2 million units by 2018 to stabilize the housing market.
On the opposition front, Democratic United Party candidate Moon Jae-in paid a visit to a traditional market in Seoul with his wife.
Moon listened to the concerns of small business owners and surveyed retail prices ahead of the Chuseok holiday.
The market he visited is particularly significant because the merchants there are protesting against a franchised grocery store moving into the area.
It is also the same place where Moon announced some of his policies for "economic democratization," or efforts to curb the power of big business.
Meanwhile, independent candidate Ahn Cheol-soo took part in a policy network forum on Sunday.
Ahn's objective was to gather expert opinions from various fields at the forum and adopt the policies to his political agenda as he sees fit.
The topic of Sunday's forum was titled, "Innovation for the People and Tomorrow" where the panels discussed innovative ways to carry out social reforms.
Pundits say the common campaign theme for the three candidates seem to be "radical change", as part of an effort to break away from the political establishment and expand their support base.
Kim Han-ul, Arirang News.

Reporter : chkim@arirang.co.kr