Sen. Karen Tallian's decision leaves John Gregg as the sole Democrat still in the race for governor.
Ritz raised just $30,000 in the last six months and has about $112,000 cash on hand – less than she started the year with.
State Sen. Karen Tallian, D-Portage, will face John Gregg in the 2016 Democratic primary.
The field for the 2016 race for governor is growing; the parents of a Hoosier killed by ISIS accepted a diploma on his behalf. Read more in our morning roundup.
Sen. Tallian has been an outspoken critic of Gov. Mike Pence and is the second Democrat to officially enter the race.
The governor-elect's proposal banks on 2.5-percent revenue increases in the next two years and on spending 1.5-percent more in the next state budget.
In an effort to pass right-to-work before the Super Bowl, the Senate will hold a committee hearing Monday -- likely with abbreviated public comment.