Campaign Politics Ajax-Pickering (part 2)Ajax-Pickering has become one of the most closely-watched ridings in the country. The incumbent is the Liberal Party public safety critic, and "pitbull," Mark Holland. The Conservative Party has parachuted in star candidate Chris Alexander, Canada’s former Ambassador to Afghanistan, who's been campaigning since his nomination 18 months ago. Mike Harilaid is running for the Green Party in the hopes to come in third place. The NDP's Jim Koppens has been running a low-key campaign. And the United Party of Canada is running one if its three candidates here, Bob Kesic. CPAC's Karen Soloman catches up with the candidates as they go door-to-door.