NH Senate Brown

Former Massachusetts U.S. Senator Scott Brown, center, is greeted by supporters after announcing his plans to run for U.S. Senator in New Hampshire Thursday, April 10, 2014 in Portsmouth, N.H. Brown hopes to unseat U.S. Sen. Jeanne Shaheen, D-N.H.

(AP Photo/Jim Cole)

Less than 24 hours after making his much speculated U.S. Senate run in New Hampshire official, Republican Scott Brown is continuing to keep his focus on President Barack Obama's Affordable Care Act with a statewide "Obamacare Isn't Working" tour.

Brown, who served as the U.S. senator from Massachusetts from 2010-2012 until losing to Democrat Elizabeth Warren, told a packed Portsmouth hotel Thursday night that the Democratic incumbent, U.S. Sen. Jeanne Shaheen is "a nice lady," but responsible for passing the president's health care reforms, which has caused issued including an increase in premiums and some people losing their current health care plans.

"As you know, I worked with Senator Shaheen in the U.S. Senate for three years. She is a nice person, but wrong on the issues facing the people of New Hampshire," Brown said, according to prepared remarks. "She made that clear when she cast the deciding vote that forced Obamacare on this state and our country. A lot of people aren’t aware of that vote to pass Obamacare. But it’s important to know if we are ever going to get past Obamacare and get America moving in the right direction."

On Friday, Brown is set to tour Next Step Bionics and Prosthetics in Manchester, N.H. where company president Matt Albuquerque says health insurance premiums for employees have increased, thanks to the Affordable Care Act. At the 11 a.m. campaign stop, Brown is also scheduled to be joined by former Manchester Mayor Raymond Wieczorek.

In New Hampshire, where Brown moved earlier this year after selling his Wrentham home, he is hoping that as the law knocks some people off of their current health care plans for more expensive coverage, and the general dissatisfaction with the law builds, he can gain a second chance at being a U.S. senator.

He is considered the front-runner among Republicans challenging Shaheen in the 2014 mid-term elections.