in the console (to turn it on go to the advanced options and click the console box) type callvote map "dm/mohdm#"
mohdm1 - southern france
mohdm2 - destroyed village
mohdm3 - remegay
mohdm4 - crossroads
mohdm5 - snowy park
mohdm6 - stalingrad
mohdm7 - u can take a guess