The polling began at 8.00 am and would continue till 5.00 pm.
Turn up in the morning was low , however, political workers believe it would pick up shortly. Eight votes were cast till 10.00 am in polling station No 112 of NA-149.
Around 5000 police personnel, including 1200 from other districts, have been deputed in Multan to provide security cover to people in NA-148 and NA-149.
Five companies of Rangers are also performing duty, official sources said.
Polling in NA-149, a constituency comprising mostly urban areas of Multan, began with active participation by political workers who had set up camps outside polling stations.
PPP nominee in NA-149 Malik Liaquat Ali Dogar cast his vote in a polling station at MC primary school Gujjar Khadda in the city. The other main contestant in NA-149 is PML-N nominee Sheikh Tariq Rasheed.
Main candidates in NA-148 are PM's son Syed Ali Musa Gilani and PML-N candidate Malik Abdul Ghaffar Dogar.
NA-148 fell vacant due to resignation by Makhdoom Shah Mehmood Qureshi while Makhdoom Javed Hashmi had resigned from NA-149.
By-elections in NA-168 were ordered after death of PPP MNA Mohammad Azeem Khan Daultana in a car accident. Main candidates in NA-168 by-polls include Azeem Khan Daultana's sister Natasha Daultana as PPP nominee and and PML-N's Bilal Akbar Bhatti. In NA- 148, 219 presiding officers, 373 assistant presiding officers (APOs) and polling officers (male) and 264 female APOs and polling officers have been assigned duties.
In NA-149, 295 presiding officers and 930 APOs and polling officers have been deputed.
Total 338,000 voters including 152900 female voters are using their right to vote in by-polls in NA-148 while the total number of voters in NA-149 is 402981 including 183352 female voters.
Total 219 polling stations comprising 373 polling booths for men and 264 polling booths for women have been set up in NA-148 while 295 polling stations have been set up in NA-149 comprising 503 polling booths for men and another 427 booths for women.