Analysis - In Brazil election turnaround, incumbent emerges as favourite

BRASILIA (Reuters) - When more than a million Brazilians took to the streets last year in anti-government protests, many believed it was a sign that the ruling Workers' Party would be ousted at the next election after 12 years in power.

Even three weeks ago, environmentalist opposition candidate Marina Silva was surging in opinion polls by tapping into the anti-establishment mood on the streets of major cities and promising to move beyond politics as usual.