Indiana Governor Mike Pence has backed Republican presidential candidate Ted Cruz, four days before the state’s GOP primary.

Campaigning on April 29, Ted Cruz praised the governor, saying he would enthusiastically welcome his support.

Indiana’s primary on May 3 is Ted Cruz’s best chance to stem the momentum of Republican front-runner Donald Trump.

Donald Trump has won a string of states, taking him closer to being the nominee.

However, if Donald Trump does not win 1,237 delegates, there will be a contested Republican convention in July.

This would mean the delegates – local party activists and senior GOP officials – being free to pick an alternative candidate like Ted Cruz or the third candidate John Kasich.

It has been an eventful week for Ted Cruz, taking a beating in five state primaries, picking Carly Fiorina as his running mate and then being called “Lucifer” by ex-House Speaker John Boehner.

Governor Mike Pence made his announcement on radio on April 29, saying the Texas senator was the best conservative among “three good men”.