The Associated Press is blatantly proving it’s going to make Campaign 2012 a long, biased slog for Republicans. Just take their news coverage of jokes. On Thursday, Democratic objections to Mitt Romney were front and center in an article titled “Democrats criticize Romney for ‘unemployed’ joke.” But on Tuesday, President Obama’s lame joke about no “shovel-ready” jobs was relegated to paragraph 16 of an article titled “Obama pledges focus on job creation.” (As if we haven't heard that pledge before.) The