In this Livemint article Visiting Senior Fellow Praveen Chakravarty explains the impact of economic outcomes on election results:
"In 27 of the 36 elections in this analysis, the ruling party lost vote share, regardless of GDP performance. But the ruling party won its re-election 19 times out of these 36—12 of them with a lower vote share. This establishes the fact that it is misleading to attribute a ruling party’s successful re-election directly to voters’ enchantment for its governance record."
Read the full article here