Ugly Double Standard on "War" funding

On news that only five Republicans voted for the "War Funding" bill in the House, one is aghast. Democrats have always run in sheer terror for the voting buttons and voted "YES" with alacrity on this kind of bill, for fear of being branded as "not supporting the troops," or "soft on defense" (or, more lately, "soft on national security"). Republicans get a free pass, and can vote or not vote and no one says peep. Why is it that if a Democrat, regardless of the validity or gravity of his concerns, is automatically a pinko pacifist if he doesn't vote for the most ill-considered military appropriations, but Republicans can cast a 'no' vote on the basic funding for a war their party started and for which it has crowed its support without surcease, for the most blatantly partisan reasons, and no one in the Mainstream Media says one single word of criticism.