In the campaigning, Vardhan attacked the Congress on range of issues including price rise, corruption, rising power tariff, scarcity of water, unemployment and promised to offer a clean government besides promising to slash by 30 per cent the power tariff, an emotive issue for Delhiites.
During his Ministership in the Delhi government (1993-98), people had found him remarkably accessible and officials respected him for his hands-on style of functioning.
“He joined politics with the laudable objective of using his considerable medical knowledge and experience for serving the common man,” former Prime Minister Atal Bihari Vajpayee had said once about Vardhan.
Apart from being an effective minister, he also proved his organisational capabilities by rebuilding the BJP's operations in Delhi, virtually from scratch, after the party's defeat in the 2003 Assembly Election.
In late 2003, he was appointed as president pf Delhi BJP. He is credited with rebuilding the party at the grassroot level after the party's defeat in the assembly polls that year.
In April 2007, the party recaptured power in the Municipal Corporation of Delhi and in 2008, the party emerged victorious in the Delhi Cantonment Board election under his leadership.
Vardhan, known for his simplicity and amiable leadership style, is admired by many leaders belonging to various political parties.
Recognising his leadership qualities, Vardhan, who hails from Baniya community, was given presidentship of Delhi BJP for three terms between 2003 and 2008.
