Delaware Attorney General Beau Biden (D), son of Vice President Biden, will run for governor in 2016 and will not pursue a third term in his current job this year, he announced Thursday.

"Over the past few months, as I’ve been planning to run for reelection, I have also been giving a great deal of thought to running for Governor in 2016. What started as a thought — a very persistent thought — has now become a course of action that I wish to pursue," Biden said in a statement. "After careful consideration, I have concluded that it is not right to ask for your support in 2014, knowing that my focus would be divided between doing my job as Attorney General while at the same time running as a candidate for Governor."

Gov. Jack Markell (D) is term limited and will exit office in 2017.

Beau Biden, 45, is a popular figure who was easily reelected in 2010. Viewed for years as a rising star, he flirted with a 2010 Senate bid before declining to run. The Democrat underwent treatment at a Texas cancer center last year. A doctor on his medical staff said in February that he has a "clean bill of health."