MANCHESTER — It’s definitely political season when you can get paid for “volunteering,” and for the final push to the Nov. 6 election, several groups are willing to spend money to have people knock on doors.

Grassroots Solutions, a professional grassroots organizing firm that promotes liberal causes, has several ads on Craigslist.

“Professional political workers” can canvass the Concord and Manchester areas on behalf of Planned Parenthood of Northern New England for $100 per shift.

Another ad for the New Hampshire Democratic Canvass Team pays $12 an hour. An open Deputy Canvass Director post pays $3,000 for the month of October.

The nonprofit recruitment firm, Work for Progress, seeks “campaign associates” to work 80 to 100 hours a week on behalf of Obama for compensation “based on an annual salary of $23,750.”

And PoliticalDNA, which describes itself as “the first and only social networking platform specifically created to help people discover their true political identity,” is seeking interns for college credit.

It all gives new meaning to the word “volunteer.” But that’s politics.