Kalu, who governed Abia state from 1999 to 2007, disclosed in a statement on Thursday.
He said holding 2023 elections the same day will minimize cost, give the electorates an opportunity to vote their genuine choice and protect their votes.
Kalu cited the United States, Ghana and Sierra Leone as countries indulging in same day elections, adding that Nigeria will not be out of place to do the same.
“INEC should conduct the 2023 elections on the same day as staggered elections are unnecessarily expensive. The conduct of the elections on different days give room for rigging, thuggery and several vices . It also puts the lives of the voters and INEC officials in intense danger.
“When elections are conducted on the same day , popular candidates will emerge because everyone will be busy in their polling units and zones unlike different days. The cost of running two days elections will also be reduced,” he said.
“To deepen our democracy, we need to get the elections right. When leaders with genuine interests of the people are voted to power, they provide exceptional leadership and infrastructure to their people,” the lawmaker said.