Attorney Bill Hudak, a contender for the GOP nomination in Massachusetts’ 6th district, dropped his bid for Congress today, making former state Sen. Richard Tisei the presumptive nominee to take on Rep. John Tierney (D). 

Hudak, the 2010 Republican nominee for the North Shore seat, said “a business opportunity” presented itself to him and, thus, he didn’t have time to fully focus on a bid for Congress.

“While I can continue to raise awareness of issues, and relish the opportunity to debate both of my opponents vigorously, supporters and donors have the right to expect that their efforts and money will be rewarded by the very best effort I can put forth,” Hudak said in a statement. “At this moment, I cannot honor such a vow.”

Tisei, who recently announced he had raked in a very comfortable $305,000 in the fourth quarter of 2011, is Republicans’ best and, likely only, hope to pick up a seat in the heavily Democratic Bay State. Roll Call rates the race Leans Democratic. 

Tisei thanked Hudak in a message on Twitter this morning and said, “Our movement is uniting to win #ma06.”