"The BJP should not mind taking outside support of like minded legislators to form a government if the JD-U government collapses after the end of the Lok Sabha polls," he said here.
Thakur said he expected many Janata Dal-United legislators to desert the now ruling party if it performs poorly in the Lok Sabha battle.
"The government is already in a minority. After the election, it is bound to fall."
Early this week, BJP leader and former deputy chief minister Sushil Kumar Modi said over 50 JD-U legislators were in touch with his party as they were unhappy with Chief Minister Nitish Kumar.
Modi said most of the JD-U's 116 legislators were against Nitish Kumar's decision to end the alliance with the BJP last year.