Who will replace Joan Burton as Labour leader?

The long-serving TD resigned from her post after an internal meeting in the Dáil this afternoon after a disastrous election campaign cut short her time in charge less than two years after she replaced Eamon Gilmore.
It is widely believed that current deputy leader Alan Kelly will enter the race to succeed the ex-tánaiste, while former junior minister Seán Sherlock is also believed to be in contention.