Campaigning for the upcoming Gujarat elections, senior BJP leader Sushma Swaraj today came out in open support for Chief Minister Narendra Modi as a potential prime ministerial candidate for the next general elections. "There are no boundaries for the post of Prime Minister. I feel Narendra Modi is capable to become the next PM and I have no doubts about it. He is both capable and suitable for holding the PM's post," Ms Swaraj said in Vadodara today, where she was campaigning for next month's elections. Mr Modi is eyeing a third straight term as chief minister in these polls.