Most of the exit polls have predicted a possibility of hung parliament with BJP likely to emerge as the single largest party followed by the Congress. JD (S) is expected to be the kingmaker in the state.
The Election Commission sent a deputy election commissioner as a "special observer" to Karnataka after recovery of almost 10,000 "fake" voter ID cards in Raj Rajeshwari Nagar Assembly. Most of the lowest percentages of less than 60 per cent were from the urban areas, predominantly in Bengaluru.
An aggregate of the exit polls indicated that the BJP will be ahead with 99 seats, the Congress will get 88 - figures that fall far short of majority.
No government in Karnataka since the Ramakrishna Hegde-led Janata Party in 1985 has been re-elected. Prior to the 2008 elections, Bachegowda was a JD (S) candidate and the polls were fought between Congress and JD (S), with Bachegowda joining the BJP in 2008, the BJP made inroads into one constituency in Bengaluru Rural.
The former Chief Minister dismissed both Congress and Janata Dal (S) having any chance to form the government and insisted that there will be no need for the BJP to seek support of any "outside support" as he was extremely confident that BJP will gain a clear majority. The Congress, claimed Ramesh, would win because of chief minister Siddaramaiah's appeal, strong party organisation and extensive campaigning by Rahul Gandhi.
Mr Yeddyurappa himself resigned from his post as chief minister in 2012 amid allegations that he abused his power.
Around 64 percent of voters exercised their franchise as polling for the Assembly elections was held on Saturday.
By not fielding any Muslim and Christian candidates, the party that runs 21 states in the country has sent out an immature message. Apart from Punjab, Congress has governments in only Puducherry and Mizoram.
The Congress had won 122 seats in the 2013 state Assembly polls following a split in the BJP, which was reduced to 40 seats while the JD (S) also got 40 seats. The BJP's victory in Karnataka would also open for it "the gateway to southern India". This later revised the BJP's seat projection to 101-113, saying the "first cut" was skewed. "Others", that includes independents, could win only three seats, it said. The Samajwadi Party and Bahujan Samaj Party showed in Phulpur and Gorakhpur Lok Sabha by-elections the damage they can cause to the BJP if they were to join forces. The 11-hour voting process, which began at 7 am, witnessed few glitches across the state with few electronic voting machines malfunctioning in certain constituencies, missing names in the voter lists etc. Polling was held in 58,008 booths in the state which has 5.06 crore electorates.